Also known as Kosher, it is the classification, according to Jewish religious beliefs, of the foods that can be eaten, which are sacred and which are not. These are the most important principles within the Jewish community, who are subject to strict rules of worship, which include kosher. The regulation was extracted from Leviticus and, today, foods as important as sausages or milk, have labels that qualify them as suitable for consumption by the practicing population of this religion.

For each type of animal there is a different classification. For the common terrestrials, the Torah (Jewish religious figure that in ancient times described the animals that should be consumed) declares that only those with cloven hooves and with instincts that tell them to ruminate, are the ones that can be consumed, the others cannot. Fish that have fins and scales are the only ones that can be eaten and the only birds that cannot be eaten are carrion birds; In addition to these animals, rodents and reptiles are completely prohibited for the practicing community. It should be noted that the aforementioned characteristics must be in the animal at the same time, just as no product derived from these can be ingested.

Shechita is a ritual in which animals are slaughtered so that they do not suffer, by making a deep and clean cut in their throats, using a sharp knife. Most of the time, Jews are prohibited from consuming the blood of animals, so it must go through a cleansing process, so that no remnants remain in the body. In addition to this, the corpse must be blessed so that it can be eaten. They cannot eat the fat around the organs or the sciatic nerve.