Kashrut
Among the numerous laws that form "kashrut" are prohibitions on the consumption of certain animals (such as pork and shellfish), mixtures of meat and milk, and the commandment to slaughter mammals and birds according to a process known as "shechita". There are also laws regarding agricultural produce that might impact the suitability of food for consumption.
Gefilte fish
Gefilte fish (; from , "stuffed fish") is a dish made from a poached mixture of ground deboned fish, such as carp, whitefish, or pike. It is traditionally served as an appetizer by Ashkenazi Jewish households. Although it historically consisted of a minced-fish forcemeat stuffed inside the fish skin, this step has been commonly omitted since the 19th century and the seasoned fish is most commonly formed into patties similar to "quenelles" or fish balls. These are popular on Shabbat and Jewish Holidays such as Passover, although they may be consumed throughout the year.