Jews religious laws that dictate customs and diet?

Judaism as spelled out in the books of Leviticus and Deuteronomy in the Torah ("law" or "teaching"). Prohibited foods that may not be consumed in any form include all animals-and the products of animals-that do not chew the cud and do not have cloven hoofs (e. g., pigs and horses); fish without fins and scales; the blood of any animal; shellfish (e. g., clams, oysters, shrimp, crabs) and all other living creatures that creep; and those fowl enumerated in the Bible (e. g., vultures, hawks, owls, herons). All foods outside these categories may be eaten.