Food that conforms to strict Jewish biblical laws pertaining not only to the type of food that may be eaten, but to the kinds of food that can be combined at one meal. For example, meat and dairy products may not be mixed. In order to meet kosher standards and receive the kosher seal, food must be prepared under a rabbi's supervision. In addition to the kinds of animals considered kosher (pigs and rabbits are among the nonkosher group), the laws also decree that animals be fed organically grown food and killed in the most humane manner possible. The word "kosher" is a derivation of the Herbrew word kasher, meaning "proper" or "pure."