It is not a problem to leave it for two or three days.

The silver ear soup is a high-level nutritional supplements, but a overnight, the nutrients will reduce and produce harmful components. Because the silver fungus contains more nitrate class, after cooking, such as placed for too long, nitrate will become nitrite.

Nitrites can form carcinogenic nitrosamines in the human body.

After all, it is still not good to put it for a long time, the nutritional value will be lost, it is best to eat as much as you can cook, when the meal is finished do not stay.