1. Observe the gills. Edible mushrooms typically have gills that are white, light brown, or pink. Poisonous mushrooms often have gills that are red, black, or brown.
2. Check the cap. Edible mushrooms usually have smooth, fleshy caps. Poisonous mushrooms often have caps that are scaly, warty, or slimy.
3. Smell the mushroom. Edible mushrooms typically have a pleasant, earthy smell. Poisonous mushrooms may have a strong, unpleasant odor, such as chlorine or almonds.
It's important to note that these tips are not foolproof, and there are exceptions to every rule. Always consult with a knowledgeable expert or use professional identification resources before consuming any wild mushroom. If you are unsure about a mushroom, it is best to err on the side of caution and avoid eating it.