Edible butter sold in general supermarkets can be directly coated on bread for consumption. Butter is a solid oil processed from milk, which is the product of filtering some water from the thick upper layer of fresh milk after stirring. Butter is rich in nutrition but high in fat. It is usually used as an auxiliary material for cooking food and is rarely eaten directly.

From the production process, butter can be divided into raw butter, superfine butter and fine butter. From the taste, it can be divided into original flavor, semi-salt and salted butter.

Butter is rich in vitamins, minerals, fatty acids, glycosylated neurophospholipid, cholesterol and other nutrients. Butter can be used to fry fish, steak, toast and spread bread.