Can you still eat king oyster mushrooms if they have developed mold?
Generally speaking, it is not recommended to eat Pleurotus eryngii (King Oyster Mushroom) that has developed mold or fuzz, to avoid potential harm to health. Detailed explanation is as follows:
The presence of fuzz on Pleurotus eryngii usually indicates the surface has developed mold, which may produce toxins harmful to the human body. Even after cooking, it is difficult to completely eliminate these harmful substances. Consuming moldy Pleurotus eryngii may lead to food poisoning, causing symptoms such as nausea, vomiting, abdominal pain, and diarrhea; in severe cases, it could even endanger life. Moreover, the texture and nutritional value of moldy mushrooms are also reduced. Therefore, to ensure food safety and health, it is recommended to discard any Pleurotus eryngii that has developed fuzz and choose fresh mushrooms for consumption.

To extend the shelf life of Pleurotus eryngii, it is recommended to wrap it with plastic wrap and store it in the refrigerator. Additionally, when purchasing and storing Pleurotus eryngii, attention should be paid to its freshness and storage conditions to avoid spoilage caused by prolonged storage or improper handling.