Let's Eat!

(1) A food that is not eaten when it is raw and is served at a kings table, to spread on bread or as a dessert, which was cooked by a non-Jew, even in the pots of Jews and in the house of a Jew, it is forbidden because it was cooked by a non-Jew

(2) If one mixed a food that is eaten even raw with a thing that is not eaten when raw and a non-Jew cooked them – if the essence is of the food is subject to the prohibition of non-Jewish cooking, it is forbidden. If not, it is permitted. Rema: And it is permitted to eat roasted peas of a non-Jew, and also the roasted legumes (which are called “arbiss”), for they are not served at the kings table And thus they treat them leniently if it is not in a place where they grease the metal frying pan with forbidden fats, then the custom is that they are prohibited. But otherwise it is permitted, and one need not worry about the vessels of non-Jews because most vessels have not been used in the last 24 hours. And any fruit that is eaten raw, even if a non-Jew cooked it, and it was mashed up and made into a cooked dish in their hands, it is permitted. Therefore, we eat the fruit mash made by non-Jews.

(6) For every object, we follow how it is most used.

So to, utensils which are generally used for cold, it is enough for them to be washed even though sometimes they may be used for hot foods (and therefore would require a stricter form of kashering)

(25) All things used for drinking, whether flasks or cups, are permitted after they are washed, whether they are glass, wooden, metal, or ceramic. Even though periodically hot bread is placed in them, because they are usually used for cold things, washing is sufficient, because for every object we follow its usual use.

(26) Glass containers, even if one put [hametz] inside for an extended amount of time, and even if they are used with hot food, do not need any kashering, because they do not absorb. Normal washing is sufficient for them.

(5) If one kashers a vessel in boiling water but required (a more stringent kashering) whitening by fire, the vessel may not be used with hot food even if it is not next to the fire. Rema: But it is permitted to use for cold food, even from the outset [without dunking in boiling water either], through washing and scrubbing well, and all the more so with regards to a vessel which requires dunking in boiling water. And this can only be done in temporary circumstances such as when he is in the house of an idol-worshipper or it is after the fact. But if he wants to use these vessels on a regular basis, there are some who are stringent and say that even to use it with cold, dunking in boiling water or whitening through heat is required. It is decreed lest once come to use it with hot, and this is our custom.