Many cultures or religions have food taboos. That means they have rules what people should not eat, or how the food has to be prepared. Examples of religious food rules are the "Kashrut" of Judaism and the "Halal" of Islam, that say that pig meat cannot be eaten. In Hinduism, eating beef is not allowed. Some Christians are "vegetarian" (someone who does not eat meat) because of their religious beliefs. For example, Seventh-day Adventist Church recommends vegetarianism.