Is the black part inside the mushroom edible?
Aug 30, 2025
Source: Cainiu Health
Dr. Yu Yongchao
Introduction
Under normal circumstances, whether black spots appear inside the mushroom and whether it is edible needs to be determined based on specific conditions. If the blackening is merely due to natural maturation of the gills and there is no unpleasant odor and the texture remains normal, it is generally safe to eat. However, if the internal blackening is caused by spoilage, accompanied by an unpleasant smell, soft or mushy texture, it is not recommended for consumption. To avoid consuming spoiled mushrooms, it is advisable to select those with intact caps during purchase.
Whether mushrooms with black spots inside can be eaten generally depends on the specific circumstances. If the black spots are due to the natural maturation of the gills, and there is no unpleasant odor and the texture remains normal, they can usually be consumed. However, if the darkening is due to spoilage, accompanied by an off smell and a soft or mushy texture, it is not advisable to eat them. Detailed explanation is as follows:
If the black color inside the mushroom is a natural result of mature gills, this usually occurs after the mushrooms have been stored for some time following harvest. The gills gradually mature, releasing spores and changing color from white to black. In such cases, the mushrooms can be safely cooked and consumed after being thoroughly cleaned, without posing any health risks.
When mushrooms spoil due to improper storage or a humid environment, bacteria or mold may grow inside, causing black spots or widespread darkening. This is often accompanied by a distinct unpleasant odor, such as a sour or musty smell. Spoiled mushrooms of this kind may contain harmful substances, and consumption could lead to gastrointestinal discomfort. Therefore, they should not be eaten and should be discarded immediately.
To avoid consuming spoiled mushrooms, choose mushrooms with intact caps, white or light brown gills, and a firm texture when shopping.
