KOSHER Jewish dietary laws
The Jewish dietary laws specify what foods are permissible and how food is to be prepared in order to be kosher. These laws are laid down in the Old Testament, the Talmud, and in later rabbinical writings. Jewish food is subject to these rules. The following notes relate to the dietary rules which enable even strictly Orthodox Jews to eat a particular dish.
Foods and the dishes produced from them which follow these rules are "kosher" (Hebrew for pure, suitable) and can therefore be eaten. The opposite is “treif,” which means “impure”, i.e. something which Jews are not allowed to eat.
The only mammals that are considered kosher are those which chew the cud and have a cloven hoof (e.g. cows). That means that pork, for example, is to considered “treif”, i.e. not kosher.
The Jewish dietary laws also specify how a warm-blooded animal i.e. a fowl or mammal is to be slaughtered. This is done by kosher butchering (shechita), in which a very sharp knife is used to sever the animal’s carotid artery and windpipe, after which the animal is suspend with its head down in order to drain all the blood. This process can only be carried out by a qualified shochet (ritual slaughterer). The length of the knife is determined according to the animal to be slaughtered. An Orthodox Jew is strictly forbidden to consume any blood, and Jewish food preparation has a series of techniques to remove the last drops of blood from a piece of meat.
Milk and meat
In the five books of Moses of the Old Testament, the same sentence is repeated three times. It is generally translated as follows from the Hebrew: “Thou shalt not seethe the kid in its mother’s milk.” The Talmudic writings in particular have interpreted this sentence as prohibiting the preparation of the meat of warm-blooded animals (i.e. mammals and poultry) together with dairy products (butter, yoghurt, cheese or similar). After a dish made of dairy products it is permitted to immediately eat a meat dish, but after a meat meal it is necessary to wait for six full hours before being allowed to eat something “milky” again.