The prepared tremella soup can be kept for two or three days, but the lid should be tightly covered and the refrigerator should be sorted to prevent bacteria from entering and smelling. Auricularia auricula soup is a kind of advanced nutritional supplement, but after overnight, the nutritional components will be reduced and harmful components will be produced.

Because tremella contains more nitrates, if it is left for too long after cooking, nitrate will become nitrite.

Nitrite can form carcinogenic nitrosamines in human body. After all, it is still not good to put it for a long time, and the nutritional value will be lost. It is best to eat and cook as much as possible, and don't leave it when the meal is finished.