Search results for: ""D'oraita""

Jewish Festivals: Medicines: When To Take: D’Oraita Festival Days
Here are the d'oraita Jewish festivals:
  • First day of Sukkot, Passover, and Shavuot
  • Seventh day of Passover
  • Shmini Atzeret (8th day of Sukkot)
  • Both days of Rosh Hashana.
On these days, you:
  • MUST take medicine whenever there is any question of a life-threatening disease or condition.
  • MAY take medicine for a condition that affects the entire body (fever, weakness, etc.). Consult a rabbi if possible.
    Exception You may not smear substances on skin UNLESS the fever is life-threatening, in which case even smearing is permitted.
  • MAY use some medicines if only part of your body is affected by a non-life-threatening disease--consult a rabbi.
Asking Non-Jew To Do Melacha D'Oraita
You may not ask a non-Jew to turn ON a light or turn ON heat, or other d'oraita violations of Shabbat--even for a mitzva or for oneg Shabbat. However, you may ask a non-Jew to do a melacha d'oraita for any of a sick person's needs, even if there is no danger to the person's life.
Note You may tell a non-Jew to do melacha, even if it is d'oraita, for a mitzva or oneg Shabbat only if it is bein ha'shmashot (between sunset and dark).
Jewish Festivals: Asking a Non-Jew To Do Melacha D'Oraita
Although you may not normally tell a non-Jew to do melacha d'oraita on a Jewish festival, even for the purpose of doing a mitzva, the non-Jew is not forbidden from doing melacha if he/she wants to do so.
Note To save a life, even a Jew may do melacha d'oraita.
Birkat HaMazon D'Rabanan: Rabbinic Source
Although the mitzva d'oraita is to thank God only when you are satiated from the meal, chazal decreed that we say birkat ha'mazon even when eating only the volume of a k'zayit and even if not satiated. So you must still say birkat ha'mazon after eating at least 1.3 fl. oz. (39 ml, or 1/6 cup) of bread within four minutes--even if you are not full.  This is known as birkat ha'mazon d'rabanan.
Introduction to Jewish Festivals: Selecting/Boreir
Issues of boreir are almost always d'oraita, not d'rabanan, and therefore we are stringent in applying restrictions concerning boreir.
Unlike on Shabbat (when you must remove some good along with the bad so as not to violate the melacha of boreir), on Jewish festivals you may remove the bad from the good if it is easier to take the undesired food from the desired food.

Desired from Undesired
You may select desired food from undesired (or inedible) substances if you follow these two rules:
1. Cannot Use Specialized Separating Utensil
    Don't use a utensil--such as a slotted spoon, peeler, or sieve--that is specialized
    for separating:
  • Food from other food, or
  • Food from other substances.
    Note You may remove dirt from a carrot's surface by scraping the peel with a knife (a tool not specialized for separating food), but not by using a peeler.
    Exception As on Shabbat, an action necessary to eat a food normally (derech achila) does not violate the prohibition of boreir. So you may peel a food that is normally separated from its peel or shell in order to be eaten, as long as you do not use a specialized instrument to do so.
Examples
  • You may peel an orange by hand, with or without a knife.
  • You may remove the shells from peanuts by hand.
  • You may remove the shell from a hard-boiled egg by hand.
2. Do This Shortly before You Eat the Food
   Prepare the food soon before it will be eaten.
     Note       You may prepare the food as much in advance as you would normally prepare a meal which you will eat--even as much as several hours.
     Examples     
On Jewish festivals, you may:
  • Remove fish bones from fish while you are eating the fish or just before eating it.
  • Cut open a melon such as a cantaloupe and remove any seeds normally.
Jewish Festivals: Medicines: When To Take
Medicine generally may not be used on the d'oraita Jewish festival days.
Introduction to Food Nullification: Utensils (Kashering)
Food Nullification in Utensils: Torah-Law and Rabbinic Decree
By Torah law (d'oraita), any clean utensil, countertop, etc., automatically reverts to neutral/pareve and kosher after not being heated to more than 120° F (49° C) for 24 hours.
But by rabbinic decree, utensils do not automatically become neutral/pareve even after 24 hours and must be kashered by heat (libun—direct heat; hag'ala—boiling in a pot; or eruy rotchim—pouring boiling water over item) or, if some types of glass, by soaking in water (meluy v'eruy ).
 
Changing Gender of Utensil
You may kasher a pot or cooking/eating utensil from:
  • Non-kosher to kosher, or
  • Year-round use (chametz) to kosher for Passover.
 
You may not intentionally kasher a utensil in order to change it from dairy to meat or meat to dairy; you must first kasher it from accidentally (or intentionally) non-kosher to kosher/pareve, or from non-Passover to Passover/pareve. You may then use it for either dairy or meat.

Once you have used it for that gender, the item retains that gender (unless you re-kasher it for Passover or you make it non-kosher first, then kasher it to neutral/pareve).
But if you accidentally heat meat with a dairy utensil or vice versa, you may kasher it back to its original gender by any one of the kashering methods, depending on how it became non-kosher.
 
Items/Materials that Can Be Kashered
The following materials can be kashered:
  • Glass, including Corelle, if not used directly on the stove or oven. Glass does not change gender or other kosher status unless heated on a flame or in the oven. Unless it is heated in this way, glass does not ever need to be kashered (except for Passover) (see Meluy v'Eruy, below).Glass, including Corelle, if not used directly on the stove or oven. Glass does not change gender or other kosher status unless heated on a flame or in the oven. Unless it is heated in this way, glass does not ever need to be kashered (except for Passover) (see Meluy v'Eruy, below).Glass, including Corelle, if not used directly on the stove or oven. Glass does not change gender or other kosher status unless heated on a flame or in the oven. Unless it is heated in this way, glass does not ever need to be kashered (except for Passover) (see Meluy v'Eruy, below).
   NOTE  Glass used directly on fire or in the oven (kli rishon) cannot
  be kashered except by heating in a kiln.
  • Granite (not granite composite)
  • Marble
  • Wood, if smooth (see notes on Eruy Rotchim, below)
  • Metal, including stainless steel, cast iron, and aluminum.
Note While metal can be kashered if thoroughly cleaned, welded handles and other difficult-to-clean parts may render a metal utensil not kasherable. You might be able to use libun kal on the problematic area and still use hag'ala for the remainder of the utensil.
 
Items/Materials that Cannot Be Kashered
  • China
  • Corian
  • Corningware
  • Crockpot
  • Formica
  • Glass that has been used directly (kli rishon) on a stove or in an oven; however it can be kashered in a kiln
  • Granite (composite)
  • Knives with Plastic Handles (knives with wooden handles may be kashered if there are no cracks in the wood and if the rivets do not have spaces that catch food and prevent you from cleaning it completely)
  • Mixer-there might be exceptions. Consult a rabbi.
  • Plastic
  • Porcelain (Enamel)
  • Pyrex (if used directly on stove or in oven--kli rishon)
  • Rubber (synthetic)
  • Silestone
  • Silverstone
  • Stoneware
  • Teflon
  • Toaster/Toaster Oven
  • Waffle Iron.
 
Pot Lid Handle
Kashering
The handle on a pot lid does not need to be kashered for normal use during the year. 
Reason It does not normally get hot.
Cleaning
However, the pot lid handle must be removed and the lid cleaned where the handle attaches, if possible.
Note If the gap between the handle and lid cannot be completely cleaned, you may not use that lid for Passover and you normally may not kasher it if it becomes non-kosher. If the lid handle cannot be removed, consult a rabbi.

Pot or Pan Handle
A plastic handle that gets hot, especially if it is over a flame on a burner, may not be kashered. If the handle becomes non-kosher, it must be replaced. If a plastic handle connects directly to the metal of the utensil, consult a rabbi about what to do.
 
Food Nullification: Heat-Kashering
Three Methods of Heat-Kashering
Heat-Kashering is of three types:  Libun, Hag'ala, and Eruy Rotchim.
  1. Libun (Direct Heat)
    How It Works  Burns up any residual food taste
 
 What It Works On
Complete Burning (Libun gamur --heating metal red-hot).  Stoves, ovens, grills, grates, baking pans, roasting pans, etc., that were ever used with direct heat MUST be kashered by heating to red-hot (libun gamur). Libun gamur works on anything except pottery (this is a rabbinic injunction since you might not do a good job).
 
Light Burning (Libun kal--heating metal hot enough to burn paper on the side opposite the one being heated).  You may use this method whenever there is a question of whether an item needs libun. For example, food may have overflowed onto gas-stove grates. Due to safek, we use libun kal-- gas-stove grates do not need libun gamur.
 
 Process 
Libun Gamur The entire metal substance of a utensil, oven, or other cooking surface becomes red hot, but the item does not need to be red hot all at the same time: it may be heated sequentially as long as the entire surface gets red hot at some time. Libun gamur can be done by blowtorch or by placing the item in a kiln. 
 
Libun Kal
  • Direct a flame, such as a blowtorch, onto the inside of a pot. Pot is hot enough when a piece of paper that touches the outside of the utensil burns (it does not need to burst into flame, just to smolder), or
  • Put the pot into the oven at 500 ° F for 40 minutes. (First, remove any non-metal handles; they will need to be kashered separately or not used.)
 
   Waiting Time  You do not need to wait at all before kashering by libun--and certainly not the 24 hours needed before kashering by hag'ala.
 
  1. Hag'ala (Boiling)
     
How It Works
Any non-kosher or meat or milk taste is removed from the walls of the utensil during boiling (hag'ala). You may kasher a pot or utensil by either:
  • Boil Method Boiling water within the pot to be kashered, and making the boiling water overflow, or
  • Dip Method Dipping a smaller pot or utensil to be kashered into a larger pot of boiling water.
What It Works On   
Pots and utensils that are used with liquids (meaning, liquid all the time) can be kashered by being immersed in boiling water (hag'ala). The utensil being kashered by hag'ala must be made of a material that can release flavor, such as metal or wood. Materials that cannot be kashered (except in a glazing furnace!) are pottery--and, by extension--china, enamel, and similar materials. 
 
Note  The Boil Method only helps if the utensil became non-kosher due to food inside the utensil. If the non-kosher food was on the outside of the utensil, you may only kasher it by the Dip Method or by libun kal.
 
Note The boiling water must reach at least the same temperature during kashering as when the utensil became non-kosher.
 
Note Once the Passover holiday has begun, chametz cannot be nullified with hot water/hag'ala (only libun can kasher something during Passover). You may only kasher during chol hamoed, not during the first and last (festival) days.
 
Note Whenever hag'ala is effective, you may instead use libun kal, since libun kal is a stronger form of kashering. Sometimes you may find it more convenient to use libun kal to kasher an item that needs only hag'ala.
Situation A metal pot of the opposite gender went through a dishwasher cleaning.
What To Do Even though the pot only needs hag'ala, you may instead kasher it by libun kal by putting it in an oven at 500° F (for this application).

Process
The Boil Method can be used as:
  • Batel BaShishim ("nullifying in 60 times" the volume), or
  • Batel BaRov ("nullifying in a majority"--that is, boiling the item in water that is more than twice the volume but less than 60 times the volume of the non-kosher element).
NoteIf a pot is hot (over 120° F, or 49° C) when only part of the pot becomes non-kosher, the entire pot is non-kosher and its volume is figured into the volume of water needed for boiling.
NoteFor whether the lid becomes non-kosher, consult a rabbi.

In Batel BaShishim, by the actual halacha, you do not need to wait at all before kashering. But the custom is to wait 24 hours--except in extreme circumstances--because it is too hard to figure out 1/60th. In Batel BaRov, you must wait 24 hours.
 
The Boil Method: Batel BaShishim
Using batel ba'shishim for the Boil Method is not customary.  You may use it for emergencies ONLY; ask a rabbi in this case.
Example To kasher a spoon with the batel ba'shishim type of hag'ala, immerse the spoon in boiling water of a volume at least the volume of 60 spoons. No waiting is needed before kashering with this method.
 
The Boil Method: Batel BaRov
To kasher a pot or utensil by hag'ala using batel ba'rov:
  • Clean the pot or utensil well.
  • Wait 24 hours after the pot or utensil was last heated to more than 120° F, or 49° C (such as when it was cleaned).
Reason Waiting 24 hours allows the taste to become “ruined” and then to be nullified (batel) in a majority (ba'rov) of boiling water.
Note During the 24-hour waiting period, you could still “use” the utensil for watering plants, etc., as long as the water remains under 120° F.
  • Fill the pot to the brim with water.
  • Bring the water in the pot to a boil.
  • Cause the water to overflow the entire rim of the pot by:
    • Plunging something hot into the pot (any item that will not cause the water to stop boiling is OK), or
    • Tilting the pot to slosh water over all of the pot's rim.
  • Cool off the pot by dipping it in cold water or putting it under cold running water.
Note If you did not put the utensil under cold water, it is still kosher b'di'avad.
 
The Dip Method
To kasher a smaller pot or any other kasherable cooking or eating utensil by hag'ala, you may dip the pot or utensil into a large, kashered pot containing boiling water.
  • If the pot in which you are kashering the items had been heated to 120° F (49° C), with food of that gender in the pot, or more within the previous 24 hours, the items you are kashering will assume the gender of the pot.
  • If the pot in which you are kashering the items had NOT been heated to 120° F or more for at least 24 hours, any items that are kashered in it will become kosher and pareve.
Note When kashering a utensil by hagala, you may dip it into boiling water one part at a time; that is, you do not need to immerse the entire utensil under the water all at the same time. This is different from doing tevila since for tevila, the entire utensil must be immersed completely.
 
Calculating 24-Hour Waiting Time
Once a pot has become non-kosher due to any reason, if it gets heated to 120° F (49° C) or more with any food or liquid in it, you must wait another 24 hours from the latest heating before you can kasher it, since everything inside the utensil becomes non-kosher again.
 
Calculating Volume
If only part of a pot becomes non-kosher, as long as the pot was hot (over 120° F, or 49° C), the entire pot becomes non-kosher and its volume gets figured into the volume of water needed for boiling.
 
 
  1. Eruy Rotchim (Hot-Water Pour)
 
Process  Pouring hot water over, for example, a sink to kasher it.
 
Waiting Time You must wait 24 hours before kashering by eruy rotchim.
 
Note Only items that became non-kosher by being poured onto, may be kashered via eruy rotchim.
 
Note Smooth-surfaced wood may be kashered through eruy rotchim (pouring boiling water) but ONLY if it became non-kosher through eruy. If it became non-kosher by being cooked or heated in an oven, it may not be kashered via eruy rotchim.
 
Note A wooden cutting board may be kashered if the board is smooth. If it has cracks and crevices, it can be sanded until smooth and then kashered.

 
Food Nullification: Meluy V'Eruy
Meluy V'Eruy To Kasher Glass
Halachically, “glass” includes Arcoroc, Corelle, crystal, Duralex, and Pyrex.
NOTE In pre-war Europe, where glass was expensive and hard to obtain, it was customary to kasher drinking glasses, especially for Passover, by soaking the glasses for three 24-hour periods (meluy v'eruy), as follows:
Step 1: Submerge glasses in cold water for 24 hours.
Step 2: Empty water, refill, and submerge glasses again.
Step 3: Repeat Step 2.
NOTE If any of these materials were heated directly on a flame or other heat source, they cannot be kashered by meluy v'eruy!

Introduction to Jewish Festivals: Medicines
Jewish Festivals: Medicines: When To Take
Medicine generally may not be used on the d'oraita Jewish festival days.

Jewish Festivals: Medicine for Chronic Diseases
You may take medicine on Jewish festivals (whether d'oraita or d'rabanan) for:
  • Chronic diseases, such as Parkinson's disease, or
  • Any disease that affects your entire body.
Jewish Festivals: Medicine for Non-Chronic Diseases
You may take medicine on Jewish festivals for non-chronic illnesses, if skipping one day will prevent cure.  You may not take medicine for non-chronic illnesses if skipping a day will just delay your being cured (unless the disease affects your entire body--in which case, you may take the medicine).

Jewish Festivals: Medicines: When To Take: D'Oraita Festival Days
Here are the d'oraita Jewish festivals:
  • First day of Sukkot, Passover, and Shavuot
  • Seventh day of Passover
  • Shmini Atzeret (8th day of Sukkot)
  • Yom Kippur
  • Both days of Rosh Hashana (even though the second day is d'rabanan).
On these days, as well as on d'rabanan Jewish festivals, you:
  • MUST take medicine whenever there is any question of a life-threatening disease or condition.
  • MAY take medicine for a condition that affects the entire body (illness, weakness, etc.). Consult a rabbi if possible.
    ExceptionYou may not smear substances on skin UNLESS the illness is life-threatening, in which case even smearing is permitted.
  • MAY use some medicines if only part of your body is affected by a non-life-threatening disease--consult a rabbi.
Jewish Festivals: Medicines: When To Take: D'Rabanan Festival Days
You make take medicines for any reason on d'rabanan Jewish festivals--even medicines not allowed on the first day of Jewish festivals--except:
  • Medicines that you smear on skin.
  • If the Jewish festival falls on Shabbat (which can only be second day of Shavuot).
Note The d'rabanan Jewish festivals are the second day of Jewish festivals except Rosh Hashana (actually, the second day of Rosh Hashana IS d'rabanan but has the status of d'oraita), plus the last day of Passover and Simchat Torah outside of Eretz Yisrael.

Jewish Festivals: Squeezing, Dabbing, Smearing
As on Shabbat, you may squeeze a tube of cream on Jewish festivals, but you might not be able to use the cream on the Jewish festival for other reasons—consult a rabbi.
Note Smearing creams or ointments is permitted only in life-threatening situations. Otherwise, you may not smear cream on skin on a Jewish festival (or Shabbat) even using a shinu'i such as using the back of your hand or a toe.
Dabbing is permitted, but only when you are permitted to use medicine. 
Example
You may use cream on a Jewish festival (and Shabbat) by dabbing (you may ONLY dab--you may not SMEAR cream) for a bee sting if it will affect the entire body. You may not use cream for a mosquito bite, since it is only a local irritation.
Baking in Non-Kosher Oven
An oven that has not been used for at least 24 hours is considered, d'oraita, to be neutral/pareve, but only if it is clean. D'rabanan, it is still not kosher, but this may be useful for when you can be lenient; e.g., if there is a safek.
How to Prepare Food in a Non-Kosher Kitchen

BAKING IN NON-KOSHER OVEN

An oven that has not been used for at least 24 hours is considered, d'oraita, to be neutral/pareve, but only if it is clean. D'rabanan, it is still not kosher, but this may be useful for when you can be lenient; e.g., if there is a safek.

Note Even when baking in a non-kosher oven, you must cook the food in a kosher utensil.

INTRODUCTION TO BAKING IN NON-KOSHER OVEN

Baking in a Non-Kosher Oven

How To Tell if Oven Is Clean

To determine whether a non-kosher oven with black or brown spots is clean, scratch them:

  • If the substance crumbles, the spots are OK and you may bake non-liquid food in that oven without covering the food.
  • If the spots do not crumble or they remain immovable or come off in flakes rather than crumbles, consider the oven not clean.

Uncovered Food; Clean (Non-Kosher) Oven

You may cook food uncovered in a non-kosher oven if:
  • The oven rack and walls are clean, and
  • The food is not “liquid.”
    Note Non-liquid is defined as not being liquid before cooking OR not being liquid after cooking, but the food does not need to be non-liquid at both times.  Examples of “non-liquid” foods:
    • Apple cobbler
    • Lasagna
    • Meat (that will create gravy at the end)
    • Pudding
    • Raw fish.
Situation You plan to bake uncovered food in a clean, non-kosher oven in which the racks are not clean.
What To DoPlace two layers of foil under the baking utensil.

Double Wrapping

When To Double Wrap

Double-wrap food before baking in a non-kosher radiant-heat oven if:
  • The rack and/or oven are not clean;
  • The food that you are baking is liquid at any time during the cooking process; OR
  • Some of the food you are baking spills onto the rack or oven surfaces.

How To Double Wrap

When wrapping food for cooking in a non-kosher oven, the wrapping material does not need to seal completely, but the:

  • Food must be completely covered with two layers of foil or plastic;
  • Layers must keep water vapor out from between the layers; and
  • Surfaces of the utensil must all be covered.

SPILLED KOSHER FOOD IN NON-KOSHER OVEN

Kosher Food Spilling in Non-Kosher Oven

If kosher food spills inside a non-kosher oven in which you are cooking uncovered kosher food (whether liquid or non-liquid), consult a rabbi about whether the uncovered kosher food may still be eaten.

NoteIn this case, it makes no difference whether the oven is clean or dirty because the spilled food is wet and takes on the non-kosher status of the oven. When the spilled food vaporizes, it carries the non-kosher essence to the kosher food or utensil.
NoteIf the non-kosher oven had not been used for more than 24 hours, the food is probably still kosher b'di'avad
NoteThis applies to food spilled either from the same utensil in which you were cooking the kosher food or from a different utensil.

FROZEN FOOD IN NON-KOSHER OVEN

Double Wrap Frozen Food in Non-Kosher Oven

Frozen food is considered to be wet food regarding cooking it in a non-kosher oven or regarding its being neutral for dairy and meat issues: If the oven is not kosher, the frozen food must be double wrapped, even if the oven is clean.

AIRLINE MEALS IN NON-KOSHER OVEN

Heating Airline Meals in Non-Kosher Oven

Airline meals are usually non-liquid, so even if they are single-wrapped, it is OK to heat them in a non-kosher oven as long as no non-kosher food contacts the kosher food container.

COOKING IN NON-KOSHER MICROWAVE OVEN

Microwave Oven: Kosher Status

Introduction to Microwave Oven: Kosher Status

If a microwave oven's walls/floor/door do not become hot (more than 120° F, or 49° C), the microwave oven does not become non-kosher, dairy, meat, or non-Passover/chametz.

NoteA microwave oven that does not normally get hot, may get hotter than 120° F if you cook:

  • A liquid or moist food for a long time (even if less than 10 minutes),
  • Several liquid or moist items sequentially, or
  • Popcorn and similar foods.

If a microwave oven's walls/floor/door get hot, the oven can become dairy, meat, or non-kosher (if they become one gender and then the opposite gender is cooked or if non-kosher food has been cooked in it). If any surface--including walls, door, floor, etc.--that gets hot are plastic or coated metal, it cannot be returned to kosher or pareve. However, if the surfaces are all made of metal, they may be kasherable. Consult a rabbi.

NoteIf the microwave oven does get hot, it cannot be kashered at all--not for Passover and not from non-kosher to kosher. To check if your microwave oven gets hot, see How To Check If a Microwave Oven Will Get Hot during Cooking

Microwave Oven: Kosher Status: Walls and Door

Since microwave oven walls and doors do not normally get hot (more than 120° F, or 49° C), there is usually no need to kasher them from milk to meat (or back to milk); from ordinary use to Passover use; or from non-kosher to kosher. Just clean all surfaces.

Microwave Oven: Kosher Status: Floor

Microwave oven floors can get hot, especially where there is no rotating glass tray and the utensil is placed directly on the oven floor. All microwave ovens should be assumed to get hot unless you have tested them personally.

Microwave Floor

Cover the floor (ideally with styrofoam or another substance that blocks heat and moisture) in a non-kosher microwave oven.

Glass Tray

The glass tray does not become non-kosher and does not become dairy or meat or chametz (unless it was removed and used in a conventional oven) as long as it is clean.

Plastic Tray Support

The plastic support under the glass tray must be cleaned and must be blocked from contact with actual cooking utensils and from food if the tray:

  • Has any food of the gender opposite that of the food being cooked,
  • Has non-kosher food on it, or
  • Is dirty and you cannot tell with what.

How To Check If a Microwave Oven Will Get Hot during Cooking

To determine if the walls of a microwave oven will get hot during cooking:

  • Boil water for as long as food would typically be cooked in that microwave oven, and
  • Touch the inside walls, floor, door, and ceiling
    • If the walls are too hot to touch, the walls may acquire the gender of any food cooked in the oven. (If the walls are already the opposite gender when cooking a food, the oven may become non-kosher.)
    • If the walls are not too hot to touch, then no change of status occurs.

Non-Kosher Microwave Oven: Hot Oven, Liquid or Solid Food

If the walls of a non-kosher microwave oven get hotter than 120° F, you must double wrap any liquid or solid food you cook in that oven.

NoteIf you did not double wrap liquid or solid food cooked in a non-kosher microwave oven, consult a rabbi about whether you may eat the food.

Non-Kosher Microwave Oven: Non-Hot Oven

If the walls of a non-kosher microwave oven stay less than 120° F, you do not need to wrap or cover liquid or non-liquid food, as long as:

  1. The microwave oven is clean and dry, and
  2. If the tray is non-glass or non-Pyrex, you put a layer of separation (plastic, styrofoam, etc…) that blocks heat and any moisture underneath the cooking utensil.

COOKING ON NON-KOSHER STOVE

Setting Down Hot Lid on Non-Kosher Stove Top

SituationYou set down a hot pot lid on a non-kosher stove top.
Status

  • Lid is dry and stove is clean: lid remains kosher.
  • Lid is dry or wet and stove is dirty: lid is non-kosher.
  • Lid is wet and stove had hot non-kosher mixtures on it within the previous 24 hours--even if the stove is clean: lid is not kosher.
  • Lid is dry or wet and stove is clean and did not have hot non-kosher mixtures on it within the previous 24 hours: lid is kosher.

COOKING WITH NON-KOSHER UTENSILS

Using a Non-Kosher Kitchen Utensil
Introduction to Using a Non-Kosher Cooking Utensil

You may not use a non-kosher cooking utensil (pot, pan, baking dish, etc.) for cooking even if the utensil is clean and has not been used for more than 24 hours (unless you kasher it first).

Fruit Cut with Non-Kosher Knife
You should wash most fresh fruit cut with a non-kosher knife in order to remove whatever non-kosher food might have been on the knife from before.
Note Fruit with a sharp taste—such as lemons or tart apples—may not be used if cut with a non-kosher knife, regardless of whether the knife had been used within 24 hours.

WASHING IN NON-KOSHER SINK

Using a Non-Kosher Sink
A dish is still kosher b'di'avad if heated to 120° F (49° C) or more in a clean, non-kosher sink that had remained below 120° F for the previous 24 hours.
 

Four Most Common Nida Questions
 
  1. What Makes a Woman a Nida
 
Introduction to What Makes a Woman a Nida
Vaginal Blood Flow
Only vaginal blood flow makes a woman nida
 
Nida D'Oraita
According to Torah law (d'oraita), a woman becomes a nida when she experiences a flow of uterine blood, preceded or accompanied by a hargasha. Because uterine blood flow is difficult to distinguish from the more general vaginal blood flow, we assume that a vaginal blood flow is from the uterus--unless a medical person (it could be a midwife) determines that the blood flow is not uterine.
 
Nida D'Rabanan
 
By rabbinic law (d'rabanan), a woman can become a nida even with only a qualifying stain (see below).

Hargasha
A hargasha is anything that signals that the woman's period is imminent. There are three classical hargashot, as well as possible hargashot that pertain only to an individual woman.
Note Many women today do not have hargashot.
 
Classical Hargashot
There are three classical hargashot:
1) Body Tremor
2) Petichat HaMakor
Some women, at petichat ha'makor (“opening of the uterus”), have a sensation of release similar to when one's bladder opens to urinate.
3) Zivat Davar Lach
Sensation of wet discharge that comes only with her period; this is not the wet discharge that every woman normally feels multiple times daily.
Note She does not necessarily need to feel it coming from her cervix in order for it to make her a nida.
 
Individual Hargashot
What Is an Individual Hargasha
The individual hargasha can be any physiological occurrence (pimples on her face, a bout of yawning, a bloated feeling in the belly, etc.) that correlates with a woman's getting her period within 24 hours. To become established as a hargasha, it must have happened three times in a row.
 
Note Cramps for most women may be a hargasha, since they may mean that the woman is about to have her period.
 
When a woman has a hargasha, we assume that her period has started, and she should immediately stop what she is doing and check internally with a bedika cloth. If she does a bedika as soon as possible and the cloth shows a forbidden color, or shows no discharge at all, she immediately becomes nida for at least 12 days, after which she goes to the mikva
Note If she had a hargasha and finds no blood and no discharge, she becomes a nida, since we assume there was blood and she just didn't find it.  If the bedika cloth shows brown, magenta, salmon, brick, amber, orange, etc., the rabbi will want to see the cloth to determine her status.
Note Most medium browns are OK.
 
What To Do If Not Sure
If she is not sure she has had a hargasha, she asks a rabbi and together they will sort out the answer.
 
 
Nida D'Rabanan
 
Stain (without Hargasha)
 
Stain Colors
A rabbi should be consulted in all matters of questionable colors of stains.  Some may seem to you to be forbidden but turn out to be permissible, and vice versa.
 
Stain Location
A stain of a color that could make a woman a nida can be on material or on the woman's body. None of the following lenient conditions apply if the woman is nida d'oraita:
 
Stains on Material
A stain on material must conceivably have been in contact with the lower regions of her body (nightgown, sheet, towel, etc.). A stain on material makes the woman a nida only if ALL FOUR following conditions apply:
1. Stain Is on White Material.
2. Stain Is on Material that Can Become Impure (mikabel tum'a)—natural materials such as cotton or silk.
Note A combination of polyester and cotton counts as cotton.
3. Stain Is at least Size of Gris/US penny.
Note A bunch of disconnected stains will not be a problem as long as no one of them is at least a gris on its own.
4. Stain Is Not Positively Attributable to Another Cause (such as hemorrhoids).
Note If the woman finds a stain (even during or after the seven clean days), even if it is more than the size of a gris, she is OK if the material is not white OR is not mikabel tum'a. However, it the stain is larger than half of a US dollar bill, she should consult a rabbi.
If she had a hargasha before she found the stain, none of these leniencies apply.
 
Stains on Woman's Body
If a woman finds a stain on the lower regions of her body, it will make her a nida if it is:
  1. Not positively attributable to another cause, AND
  2. At least the size of a gris. For small, unconnected spots, she must evaluate whether, together, they equal the size of a gris (on material, the spots DO NOT get combined). If yes, she should consult a rabbi.
 
 
II. HARCHAKOT: How Do the Couple Conduct Themselves while the Wife is a Nida?
 
According to Torah law, when a woman is a nida, she and her husband are prohibited not only from having intercourse, but also (“lo tikrav”—Vayikra 18:19) from having any physical contact of a passionate or romantic nature (negiya shel chibuk v'nishuk)--those patterns of physical contact that often lead to intercourse. Since the penalty for violation is kareit, husband and wife should live separately during the nida period, but because we don't, we use “distancers” (harchakot) as reminders of distance while living together in the same home. The harchakot sensitize us to the smallest gestures of love. The couple who know that in a finite amount of time their union will not only be permitted, but even be davar sh'bekedusha--a thing of sanctity--will have the willpower to wait it out.
 
These harchakot are applied during the nida period:
 
General Harchakot
S'chok v'Kalut Rosh In general, avoid fun activities which could lead to lightheadedness)
 
Negiya Afilu b'Etzba Ketana Avoid any physical contact, even if not romantic.
 
The Bedroom
Mita Achat ("Single Bed") Do not share one bed. You must have two separate beds, but there is no standard for how far apart the separate mattresses and linens should be, except that they must be more than 1 tefach (3.5 inches) apart from each other. If there is one headboard, one bed should be moved away from the headboard.
 
L'Hatzia Mitato b'Fanav The wife may not, in front of her husband, prepare his bed for sleeping (as opposed to the chore of making the beds in the morning).
 
Sitting on the Bed The husband may not sit or lie on wife's bed unless she is out of town; the wife may not lie on her husband's bed in his presence.
 
Wining and Dining
K'ara Achat ("Single Plate") Husband and wife may not share a plate as they eat. A husband may not eat of his wife's leftovers unless someone else ate from it in between, it was transferred to another plate, or she has left the table for the duration of the meal.  
 
Shulchan Echad ("Single Table") You may not eat at the same table unless you put an item between yourselves that is not normally on the table. Reminders (heker) can be napkin rings, a flower, a food item known not to be part of the meal, etc. Special placemats are also acceptable reminders.
Note If other people are sharing the meal with you, you do not need a reminder.
 
Hagashat Ochel Li'Fanav ("Serving Food in Front of Him") The wife may not directly serve her husband food except in an altered way.
Example
The wife may put the plate to the side of her husband instead of in front of him.
 
Mezigat HaKos Bi'Fanav The husband may not pour his wife a cup of any drink in front of her. The wife may not pour her husband a cup of any drink in front of him.
 
Lishlo'ach La Kos Bracha The husband may not even send or pass a cup of wine to his wife, even by someone else and even if she is in a different room. After the husband makes kiddush, havdala, or sheva brachot, he puts the wine down in front of himself and then his wife may take the cup and drink. If there are other people present, the husband may pour wine into several cups and one of them may be passed to his wife (since no specific cup was designated for his wife).
 
Individual Harchakot
Histaklut b'Mkomot HaMechusim The man may not gaze appreciatively at those parts of the woman's body that are normally covered.
 
Hoshata M'Yad L'Yad ("Passing from Hand to Hand") The couple may not pass things by hand to each other.
 
Zerika MiYad L'Yad The husband or wife may not throw something for the other to catch.
 
Safsal Mitnaded  The couple may not sit on any surface that is not firmly attached to the ground and in which the movement of one person causes the other person to move.
 
Tiyul baSfina O Agala: The couple may not take a pleasure (destination-less) trip on a boat or wagon. However, if they have a destination, it is OK.
 
Perfume The husband may not intentionally smell his wife's perfume (even if she is not wearing it!).
 
Yitzikat V'Hava'at Mayim V'Richitzat Panav, Yadav, V'Raglav Except for mitzvot, the wife may not draw or bring water to wash his hand, face, or feet or draw his bath for him.
 
Illness The wife may do what the husband needs if he is sick. If the wife is sick, the husband may only help her in cases of substantial need.
 
III. Tahara after Nida:
The Five Steps of Purification
 
1. Minimum Duration of Nida
A woman will be a nida even if she saw blood on only one day. But she must wait until the fifth day before she may begin counting her seven clean days (in unusual circumstances, she MAY be permitted to reduce the 5 initial day count--consult a rabbi).
Note In counting nida (bleeding) days (as opposed to clean days), part of a day counts as a full day. 
Example If the bleeding starts at 2p on Wednesday, the woman counts from 2p until sundown as Day 1. Thursday is Day 2, etc. Sunday before sundown, she may do the first bedika
 
2.  Hefsek Tahara
On the fifth day (or whenever--after the fifth day--the bleeding and staining seems to be ending), she does a hefsek tahara to check very carefully internally to make sure all the bleeding and staining is over. The hefsek tahara has three parts:
  1. Wash or cleanse lower regions of the body.
  2. Do an internal check/bedika: Insert a white cloth into vagina and circle it around to make sure to get every nook and cranny.
  3. Moch dachuk: Insert a bedika cloth within two halachic hours of sunset and leave it in until after dark.
Reason The seven clean days must be complete days.  Since we don't know exactly what time the first day begins, the cloth is inserted before sunset of the first “clean” day.
Note If doing this causes any problem for her, she should consult a rabbi.
 
3.  Count of Seven Clean Days with Three Components
  1. Bedika
The woman must have seven complete consecutive halachic days free of any impure discharge (generally means bleeding). She should make an internal examination each day when she gets up, and another before sunset. If this regimen will cause her problems, she should consult a rabbi.
 
  1. White Underpants
During the seven clean days, the woman must wear white underpants. But if she wears tight-fitting underpants, as in contemporary clothing, only the part under the vaginal area must be white.
Note If the woman has any bleeding during or after the seven clean days, she should consult a rabbi.  
 
  1. No Hesech Da'at
A woman does not need to think about the seven clean days all of the time, but she must keep in mind, during the entire nida purification process, that she is not in an active nida state.  
Situation A woman found a stain and asked a rabbi about it. She assumed she was definitely nida.
What To Do Once she assumes that she has become a nida during that seven-day period, she must begin her count again--even once she has found out that she was not, in fact, a nida
Note If she asked the rabbi while not yet assuming that she was definitely a nida, she may continue her original count after the rabbi determines that she was not a nida.

4.  Chafifa
Chafifa General Rules
The woman must do total body cleansing, particularly the hairy areas, to make sure there is no intervening substance (chatzitza). Anything that is not part of the body, and which can be fairly easily removed, should be removed before immersing in a mikva.
Reason In order for a woman to become tehora, she needs to be totally immersed in the mikva all at one time, with no chatzitza between her and the mikva waters.
There are three definitions of chatzitza:
a.   D'Oraita
According to Torah law, something is only a chatzitza if it is “ruba v'makpida”—something that covers the body AND bothers the woman. Very few chatzitzot are in this category; here are some:
  • Full body cast.
  • Being covered with sand.
  • Being sweaty from head to toe.
b.   D'Rabanan
Chazal said a chatzitza is something that covers the body OR bothers the woman. 
Examples
  • Moisturizer that covers most of her body.
  • Adhesive that is left on her skin after a band-aid has been removed.
  • Imperfect manicure, if she would not go to an interview like that.
c.    Nashim Nahagu
Nashim Nahagu means a practice that women took upon themselves: Everything that a woman can easily get off, she tries to get off--even if it covers only a small part of the body and it does not bother her at all. This is a custom (minhag) that later became a d'rabanan halacha.
Note In cases in which this type of halacha generates a shalom bayit issue or would cause someone to avoid immersing in the mikva, consult a rabbi.
 
Chafifa: Nails, Teeth, Contact Lenses
Cutting Nails
The woman should cut her nails at least flush with the fingertips. 
Note If a woman would not want to immerse in the mikva because she doesn't want to cut her nails, ask a rabbi.
Cleaning Teeth/Removing Contact Lenses
The woman must clean her teeth and remove contact lenses even though the mikva waters do not need to contact the internal surfaces of the mouth or the eyes.
Reason While the woman is not required to open her mouth or eyes while immersing, the water must be able to make contact if she did open her mouth or eyes.

If You Forgot
If she is already home or after having relations, she found she had forgotten to take out her lenses, or she finds another chatzitza, she should ask a rabbi
 
5.  Immersion in Mikva/Tevila
Mikva: Timing
 
When To Go To Mikva
If her husband is in town, it is a mitzva to go to the mikva as soon as halachically permitted.
 
When Mikva in Unsafe Neighborhood
If the mikva is in a neighborhood that is unsafe at night, she may go during the day (she immerses on the eighth day instead of the night of the seventh night).
 
When Mikva Night Is Friday Night

Any woman whose mikva night is Friday night SHOULD make every effort to go to the mikva that night.
 
If Mikva Too Far
If mikva night is Friday night and the mikva is not within walking distance (and/or there is inclement weather), in general she may postpone going until after Shabbat is over.  Consult a rabbi about driving Friday afternoon and immersing before dark for such instances as:
  • Shalom Bayit (in this case, she is not permitted see her husband until after dark Friday night).
  • Dangerous Neighborhood.
  • Infertility Issues (if she will miss ovulation if she does not go Friday night).
 
Preparations before Friday Night
Ideally, the woman should complete her full-scale mikva preparation--including bath and shower--before Shabbat, light candles before Shabbat, walk to the mikva, immerse after dark, and then walk home.
If the mikva is within walking distance and the weather is inclement, the first-level b'di'avad is to finish preparing for Shabbat and mikva, including making a blessing on the Shabbat candles (verbally stipulating that she is not accepting Shabbat at this lighting), be driven to the mikva, and wait until her turn to immerse.
 
Mikva: How To Immerse
Kosher immersion/tevila requires simultaneous immersion of every exposed part of the body (not bet ha'starim).   Here is the best way to accomplish simultaneous immersion:
  • Enter the water until it is about 12 inches above the navel. 
  • Make sure that every part of your body is relaxed (if you squeeze anything, you create crevices and cracks that impede complete access to your skin). 
  • “Flesh”/basar is exposed to the water when standing while leaning a little forward.
  • Exhale and push yourself under the water until you are certain that all of your body and all of your hair are submerged. 
  • Once your head is above the surface of the water, say the blessing and then immerse again, the same way.

Back Home
If neither spouse wants to have marital relations, that is no problem; however, if either one wants to, the spouse is required to accommodate the interested spouse.
Exception If a spouse does not feel well (not if too tired--that is no excuse!): RMH uses this guideline: If you feel so bad that you would not go out of house to pick up $500, you are sick!
 
IV. Anticipating the Next Period/Veset
 
What To Anticipate
In anticipating the time of the month when her period is most likely to occur (onat ha'veset), a woman must determine both:
  1. The day of the month, and
  2. Whether it will begin during the daytime period (sunrise to sunset) or the nighttime period (from sunset to sunrise)
Note This period may be more or less than 12 hours!
What To Do
Once the woman has determined her onat ha'veset, she and her husband must abstain from relations during that daytime or nighttime period. If the onat ha'veset passed and the period did not come (determined by 1 or 2 bedikot during the onat ha'veset), then the husband and wife may resume a normal marital relationship until her period comes.
Note Although the halacha refers to abstaining from relations during that period, many people are stringent (machmir) to also abstain from intimate affectionate contact (negiya shel chibuk v'nishuk).  But additional prohibitions (harchakot) beyond negiya shel chibuk v'nishuk, such as passing food, sitting on a moving object that one person moves, etc., do not apply to this anticipation period.
Note Many people also abstain from relations and intimate contact during the day and night preceding the expected veset.
 
Regular and Irregular
Every woman needs to be able to anticipate her next period, whether she is a) regular or b) irregular. “Regular” is determined by any pattern to one's menstrual cycle that occurs three times in a row.
Note It is very uncommon for a woman to maintain her regular period for a long time.
 
Anticipating a Regular Period
Here are the five most classic regular patterns:
  1. Veset HaChodesh (Monthly Cycle)
Veset ha'chodesh is when the period appears in three consecutive months:
a) On the exact same Jewish-calendar date, and
b) All three times at night, or all three times during the day.
Example
A woman gets her period on these three dates:
12 Tishrei--night
12 Cheshvan—night
12 Kislev—night
 
The couple will abstain 12 Tevet—night.
Note Many people begin to abstain from the 11th during the day.
 
  1. Veset Haflaga (Intervals Cycle)
Veset haflaga is when the menstrual period appears on four consecutive occasions at three intervals of identical length apart and they are either all during the daytime or all during the nighttime.
 
  1. Veset HaGuf (Body Symptoms Cycle)
In veset ha'guf, the menstrual period comes within one day after a very specific symptom that is experienced as heralding the period, such as lower back ache, aching breasts, etc.
 
  1. Veset HaMurkav (Combination Cycle)
In veset ha'murkav, the woman is regular, three times in a row, for a Body Symptom (#3:  Veset HaGuf) in conjunction with either a Monthly Cycle (#1:  Veset HaChodesh) or an Intervals Cycle (#2:  Veset Haflaga).
Example
On the 10th of three Hebrew months in a row, a woman gets lower abdominal cramps; and on the 12th of each Hebrew month, for three months in a row, she gets her period. 
Note If she gets cramps on the 11th of the month, she does not need to separate and she may ignore those symptoms for that month. She will separate once she gets her period.  
 
5. Veset HaMa'aseh (Action Cycle)
In veset ha'ma'aseh, a particular activity has caused her period to come three months in a row.
Example
A woman goes to a sauna and that causes her period.
 
Anticipating an Irregular Period
A woman with an irregular period may have to abstain from relations and affectionate intimate contact (negiya shel chibuk v'nishuk) during these three onot/time periods:
  1. Yom HaChodesh
Same Hebrew calendar date and the same daytime or nighttime period as her prior period started (but it has not yet been three times in a row).
 
  1. Haflaga
Same interval of days between her two most recent periods, projected to the next month (daytime or nighttime period).
 
  1. Ona Beinonit
Thirtieth day after the most recent period when counting intervals.  Count from Day 1 of Period 1 through Day 1 of Period 2.
Note The 30-day interval includes both start days.
Note The 30th day, every other month, will be the same as Yom HaChodesh.
Hinting to a Non-Jew To Do a Melacha
You may hint or imply that you need something done in order to induce a non-Jew to do even a melacha d'oraita that will benefit you, but only if you don't need that action.
Example Turning off a light; bringing a chair from outside an eruv.
Introduction to Shalom Bayit
Shalom bayit is a family at peace, as one unit. When leniencies in law are used to avoid intrafamily conflicts, customs and d'rabanan halachot can sometimes be overridden. But d'oraita halachot may not be violated. Consult a rabbi.
Situation
You want to go to minyan but your wife is overwhelmed with trying to feed several children and she asks you to help.
What To Do
You must miss minyan and help her since your wife's needs take precedence over your wish to pray with a minyan.
Note With shalom bayit problems between spouses, a rabbi should be consulted for details.
Note Once someone is married, his or her in-laws are part of his or her family and are included in shalom bayit rules.


 



Jewish Festivals: Kiddush: Pour Revi'it
As on Shabbat, the minimum volume of kiddush beverage on which you may say Jewish festival kiddush (or havdala) is a revi'it:
  • 4 fl. oz. (119 ml) for d'oraita cases such as the first night of Jewish festivals (or Shabbat evening) kiddush, and
  • 3.3 fl. oz. (99 ml) for d'rabanan cases such Jewish festival lunch and evening/daytime meals on the second Jewish festival day (as well as kiddush for Shabbat lunch).
Volume/Solid
K'Zayit
K'zayit is variously defined as being the volume of 1/3, ½, or 1 whole egg; 0.6 - 1.9 fl. oz. (18-56 ml), depending on the application.
Note For d'oraita requirements such as seder, we are stringent (machmir) and use the larger amount of 1.9 fl. oz. (56 ml). For d'rabanan rules, we are more lenient and use only 1.3 fl. oz. (39 ml, or 1/6 cup).
  • K'zayit for Seder Matza and Afikoman1.9 fl. oz. (56 ml) of matza.
  • K'zayit for Bracha Achrona and Birkat HaMazon: 1.3 fl. oz. (39 ml, or 1/6 cup) of solid food.

Beitza, K'Beitza

Beitza, K'Beitza = 1.9 fl. oz. (56 ml); an egg size by definition.

Note For an etrog, which must be at least 1 egg volume, today we use a minimum of 2 egg volumes.