Yogurt is a kind of dairy product which takes milk as raw material, adds beneficial bacteria (starter) to pasteurized milk, ferments, and then cools and fills. At present, most yogurt products on the market are solidified, stirred and fruity with various juices and jams. Yogurt not only retains all the advantages of milk, but also exerts its advantages and avoids its weaknesses in some aspects, making it more suitable for human nutrition and health care products.

During the fermentation of yogurt, about 20% of sugar and protein in milk are hydrolyzed into small molecules (such as galactose and lactic acid, small peptide chains and amino acids), and the fat content in milk is generally 3%-5%. After fermentation, the fatty acids in milk can be increased by 2 times compared with raw milk. These changes make yogurt easier to digest and absorb, and the utilization rate of various nutrients can also be improved. Yogurt is fermented from pure milk. Lactic acid bacteria can not only retain all the nutrients of fresh milk, but also produce various vitamins necessary for human nutrition, such as VB 1, VB2, VB6, VB 12, etc.