1. The long white hairs of Pleurotus ostreatus are generally aerial hyphae produced due to long storage time.

2. Under normal circumstances, if the surface of Pleurotus ostreatus does not turn yellow or dark, but has white hairs, and the area is not large, it can be eaten, and it can be scalded with boiling water before eating. But if you have white hair and the color is dark or it smells rotten, you'd better not eat it.

3. Pleurotus ostreatus is also very beneficial to human body, which can enhance cell function, resist immunity from various diseases, relieve pain, calm down, and have special effects such as relieving cough and resolving phlegm.