Take the lead. Preserved eggs are delicious, but they have little nutrition. There is also a lot of lead in preserved eggs. Eating too much will lead to excessive lead intake and lead poisoning. According to the national regulations, the lead content of preserved eggs per1000g should not exceed 3mg, and preserved eggs that meet this standard are also called lead-free preserved eggs. So? Lead-free preserved eggs Not that it does not contain lead, but that the lead content is lower than the national standard.

How to store preserved eggs with shells: Refrigerator storage: Preserved eggs with shells can be stored in the refrigerator, but it should not be stored for too long, otherwise the preserved eggs will form ice cubes, which will affect the taste.

Plastic bag: You can also put the belt in a plastic bag and seal it, and then put it in a cool and ventilated place, or you can keep it for a while without deterioration.

Cool and dry place: Preserved eggs with shells should be stored in a cool and dry place to avoid sun exposure and deterioration of preserved eggs.

Deterioration: You can break the preserved egg and observe that the yolk of the preserved egg is light yellow. If not, the preserved eggs have gone bad.