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.
Lobster
As a crustacean, lobster remains a taboo food in the dietary laws of Judaism and certain streams of Islam, see also kashrut, halal, and list of halal and kosher fish.