2. Butter is a solid fat processed from milk, is the fresh milk to be stirred after the upper layer of the thick object after filtering out some of the water product.

3. Mainly used as a condiment, nutritious but high fat content, so do not eat too much.

4. The fat-soluble nutrients in milk are found in the milk fat, including vitamin A, vitamin D, and small amounts of vitamin K and carotene.

5. Therefore, butter is an excellent source of vitamin A and vitamin D, and its yellow color comes from carotenoids.

6. The fat content of cream is many times higher than that of fresh milk. Take the light cream added to coffee, ice cream, and other foods, the fat content can be up to 5 times that of fresh milk.

7. And butter is produced from the cream, the cream is further stirred with a centrifuge to separate, you can get butter.

8. It takes 10 pounds of milk to produce 1 pound of cheese.