Search results for: ""brachah achronah""

Birkat HaMazon: Time Limit
For time limits on birkat ha'mazon, see After-Blessings (Bracha Achrona): Time Limits.
Latest Time You May Eat on Shabbat
If you finished eating (and saying birkat ha'mazon/bracha achrona for) a full meal or even a snack that you intended to constitute your se'uda shlishit, you may not eat any more once the sun has set on Saturday until after you have made or heard havdala.
Note If you did not intend for the food to constitute your se'uda shlishit, see When To Eat Se'uda Shlishit with Bread or When To Eat Se'uda Shlishit without Bread, above.
Volume/Liquid
1 Revi'it = Usually 3.3 fl. oz. (99 ml); but 4 fl. oz. (119 ml) for:
  • Any food requiring bracha achrona.
  • The four cups of wine at the seder.
  • Kiddush for Shabbat and Jewish festival nights.
 
1 Log = Volume of 6 eggs = 4 Revi'ot (a revi'it is 1/4 of a log)  
1 Kab = 4 Login  
1 Se'ah = 6 Kabin
 
40 Se'ah = Volume equivalent to 3 cubes, 24 ½” (61 cm) on each side; minimum requirement for mikva = about 192 gallons/750 liters  

1 fl. oz. = 1.77 cu. inch (about the size of a golf ball)
Jewish Festivals: Ending: Havdala: How Much To Drink
To fulfill the commandment of havdala (or kiddush), the person making kiddush must drink at least 2 fl. oz. (59 ml) within 30 seconds from the kiddush cup. However, drinking at least 4 fl. oz. (119 ml--a revi'it) from the havdala cup within 30 seconds allows you to say bracha achrona.  
 
Birkat HaMazon: If You Planned To Eat Minimum Amount of Bread and Did Not
If you planned to, but did not, eat a full meal:
  • Do not say al ha'michya if you did not eat at least 1.3 fl. oz. (39 ml, or 1/6 cup) of foods baked from the Five Grains within four minutes--even if you had washed your hands and said ha'motzi.
  • Do say the appropriate bracha achrona for any other foods of which you ate the minimum (1.3 fl. oz.--39 ml, or 1/6 cup) quantity within four minutes, even though you did not say an individual bracha rishona (since you were planning to
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 Afikoman:  1.9 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.