Taste (Ta'am) Transfer: Spicy/Charif: Sitting in Container

Cold, spicy/charif, solid food (with no liquid) does not transfer gender UNLESS it was under pressure, so simply sitting in an opposite-gender or non-kosher container does not have any effect.
Note Cold, spicy/charif, liquid food sitting in an opposite-gender or non-kosher container is kosher only if it sat less time than needed to become cooked.
ExampleYou ate cold (less than 120° F, or 49° C) spicy/charif food of one gender on a cold plate of the opposite gender:
Liquid Food
If the cold spicy/charif food is liquid but it is in contact with a utensil of the opposite gender for less time than it takes to boil, it would be kosher but, again, you should only do this ad hoc.

Also see Spicy/Charif Soaking: Long Enough To Be Cooked: Food and Utensil.