First of all, the longer an egg is stored, the lower its quality will be.

In summer, it is generally stored indoors at room temperature, and the shelf life is about 10 day. Eggs can be stored at room temperature in winter for about 15 days. When the refrigerator temperature is 2℃ ~ 5℃, eggs can generally be stored for about 1 month, but the quality of eggs will drop by one grade every 1 week, so it is best to eat them as soon as possible.

Second, the shelf life of meat in cold storage is very short.

Fish, beef, pork, poultry and other fresh meat should not be refrigerated for more than 2 days. After buying the meat home, if it is not frozen, cook it as soon as possible. Cooked meat should be refrigerated for a long time, but it is best to eat it within a week.

3. If the rice flour is stored correctly, the shelf life can be extended by 1 year.

The shelf life of rice noodles is 6 months to 12 months at room temperature. If it is in the north, it can be extended to 24 months under normal storage conditions as long as it is not placed in a high temperature and humidity place.

Fourth, the shelf life of bread and cake is related to the season.

Generally, the shelf life of bulk foods such as bread and cakes is 7 days in winter, 3 to 5 days in spring and autumn, and only 1 to 2 days in summer. Because this kind of food is rich in water, if it is not properly preserved, the bread and cake are likely to be moldy the next day and can't be eaten any more.

5. The shelf life of edible oil is different before and after opening.

In the unopened state, the shelf life of common edible oil is 18 months. Once opened, the shelf life of edible oil will be shortened accordingly, and it is best to eat it within 3 months.