Salt will lose nutrients during long-term storage. In addition, improper storage of salt may also produce harmful substances. For example, if salt is stored in a humid environment, it may be polluted for a long time, leading to deterioration of salt and harm to the body after eating. It is recommended to avoid eating expired food at ordinary times to avoid discomfort.

The storage time of salt should not be too long, and the shelf life is generally 3-5 years, because iodine and potassium are generally added to salt. If exposed to the air for a long time, it will cause insufficient iodine and potassium content in salt.

Wonderful use of salt after expiration;

First, wash the live fish with salt. The fish I just bought are all muddy. How can I use salt to remove the fishy smell? In fact, we only need to wash the fresh fish with salt water to remove the fishy smell, and the cooked fish tastes good.

Secondly, wash the Pleurotus ostreatus with salt. As we all know, when washing Pleurotus ostreatus, there will be a layer of lead on the surface, so when washing Pleurotus ostreatus, add some salt in water, then soak it in Pleurotus ostreatus for a few minutes, then gently scrub Pleurotus ostreatus with a clean cloth, and the Pleurotus ostreatus will be cleaned.

Reference to the above content: Baidu Encyclopedia-Salt