The yogurt marked "fermented milk" in the supermarket is the real yogurt. The yogurt marked "fermented milk" is the real yogurt, and the first place in the yogurt ingredient list should be milk. Yogurt is a kind of milk beverage with sweet and sour taste. It is a dairy product with milk as raw material, adding beneficial bacteria to pasteurized milk, fermenting, cooling and filling. Yogurt products on the market are mostly solidified, stirred and fruity, with all kinds of fruit juice and jam. Yogurt has been used as food for at least 4500 years. The earliest yogurt may be milk packed in sheepskin bags by nomadic people, which is naturally fermented by bacteria attached to the bags and becomes cheese. Yogurt is fermented from fresh milk and is rich in protein, calcium and vitamins. Especially for those who can't enjoy milk because of lactose intolerance, yogurt can be a good choice.