Raw eggs have high nutritional value and are rich in protein, fat and various nutritional elements, but they have a certain shelf life when stored. Generally speaking, eggs can be stored at room temperature of 15 to 20 degrees for about 15 days. If the egg is stored for 6 months, the surface may not be different, but the yolk inside the egg may be scattered or deteriorated, and the nutritional value inside will disappear.

Once the shelf life of eggs exceeds, they should be handled as soon as possible to avoid eating them by mistake. Don't wash the eggs with water before storage, so as not to destroy the gelatinous substances on the surface of the eggs and lead to deterioration of the eggs. We must pay attention to food hygiene in daily life, and any food or medicine should be forbidden to eat if it is left for too long.

Precautions for egg preservation:

1. Don't rinse the eggs that need to be preserved. Wash the eggshells before cooking them.

2. Eggs must be stacked upright with big heads up and small heads down, and cannot be placed horizontally.

3. The bought eggs can't be put in the refrigerator directly. It should be sealed in food bags or fresh-keeping boxes and put in the refrigerator. If eggs need to be stored in the refrigerator, be careful not to be exposed directly in the refrigerator, because there are many pollutants on the surface of eggshells, which can easily pollute other foods in the refrigerator.

4. Eggs can only be stored in the freezer, not frozen, because freezing will change the protein, and the yolk will solidify easily.

5. Don't store eggs with strong-smelling ingredients such as onion, ginger and garlic.