Human sacrifice, where it existed, was always much more rare. All or only part of a sacrificial animal may be offered; some cultures, like the ancient and modern Greeks, eat most of the edible parts of the sacrifice in a feast, and burnt the rest as an offering. Others, including the ancient Hebrews, burnt the whole animal offering, called a holocaust. Animal sacrifice should generally be distinguished from the religiously-prescribed methods of ritual slaughter of animals for normal consumption as food.