The shelf life of food is the best edible period of food, which is generally determined by experiments. After this period, the product quality or quality may change.

For example, problems such as decreased nutritional value, excessive microorganisms and oxidized products indicate that food is no longer suitable for sale. What needs to be emphasized here is that the state stipulates that it is forbidden to sell food beyond the shelf life.

Extended data:

The main uses of expired milk are:

1, skin care. In the hot summer, the poisonous sun often leaves a series of marks on our skin. If we don't take some measures, the pigment will calm down and leave a black mark. Therefore, after the skin is sunburned in summer, it must be applied with iced milk on the face, which can not only calm the skin, slow down the deposition of melanin, but also make our skin reappear yesterday's white and delicate.

2, cooking. In addition to the expired and stale milk, fresh milk that is about to exceed the shelf life is not suitable for direct drinking. It can be heated and boiled with low fire, and then added to dishes or cakes when the milk is cold. You can also mix milk, eggs and flour to make toast; It can also be used to boil soup, making the soup more delicious and fragrant.

People's Daily Online-Expired milk is also the four major uses of counting expired milk.

People's Daily Online-Exhausted milk's wonderful use is open to the public