Can mushrooms with white hair still be eaten?
Aug 30, 2025
Source: Cainiu Health
Dr. Yu Yongchao
Introduction
Under normal circumstances, whether mushrooms with white fuzz can be eaten depends on the specific situation. If the white fuzz is spores naturally secreted by the mushroom or a white frost formed during cold storage, and there is no unpleasant odor and the texture is normal, the mushrooms can usually still be consumed. However, if the white fuzz is caused by mold growth, accompanied by an unpleasant smell and a soft, mushy texture, it is not recommended to eat them. To avoid premature growth of white fuzz or spoilage, mushrooms should be handled promptly after purchase.
Generally speaking, whether mushrooms with white fuzz can be eaten depends on the specific circumstances. If the white fuzz is spores secreted by the mushroom itself or a white frost formed during cold storage, and there is no unpleasant odor and the texture is normal, the mushroom is usually safe to eat. However, if the white fuzz is caused by mold growth, accompanied by an unpleasant odor and a soft, mushy texture, it is not recommended to consume it. Detailed analysis is as follows:
If the white fuzz on the mushroom is caused by its own physiological characteristics—for example, oyster mushrooms or king oyster mushrooms may secrete white spores during maturation, or develop a white frost-like layer on the surface when refrigerated at low temperatures—the mushroom should have no unpleasant odor and should feel firm and elastic when touched. In such cases, the mushroom can be safely consumed after thorough washing and cooking, without posing a risk to health.
When mushrooms are stored in a damp and high-temperature environment, mold spots or patches may appear on the surface. These molds may penetrate into the internal tissues of the mushroom and are often accompanied by sour or musty odors. Mushrooms contaminated with mold may contain harmful substances, and consumption may cause gastrointestinal discomfort. Therefore, such mushrooms should not be consumed and should be discarded immediately.
To prevent mushrooms from developing white fuzz or spoiling prematurely, it is important to process them promptly after purchase. Storage time should not exceed 3–5 days. Before consumption, carefully inspect the mushrooms to ensure they show no abnormalities, then wash and cook them accordingly.
