Salt and MSG will form lumps if left in the seasoning box for a long time. How to prevent them?

In the dry state, the crystals of salt and monosodium glutamate are independent of each other. They all have the property of being dissolved in water, so if they are often placed in contact with relatively humid air, especially during the Huangmei weather in Jiangnan, they will absorb too much moisture in the air, causing the crystallized surface to partially dissolve. , the crystals will stick to each other, causing agglomeration or even gradual melting. For daily use, it is best to use a sealable container. After use, the lid must be tightly closed immediately to prevent clumping or melting.