White off, that is, butter, also known as cream, is made by separating the thin cream and skimmed milk from the milk, and then ripening the thin cream and stirring it.

Butter is a solid fat processed from milk, is fresh milk and stirred, the upper layer of the thick object filtered off part of the water after the product. Mainly used as a condiment, nutritious but high fat content, not excessive consumption.

In the 5th century BC, the Huns because of pastoralism, dairy products, a variety of production techniques mature and spread at home and abroad. Foreigners called butter, is the Chinese called cream in the milk refining edible oil products. The Huns are the world's earliest processing of edible butter of the nation.