You can put a few grains of white rice into the pot when you cook the mushrooms. If the white rice turns black, it means that it is a poisonous mushroom and should not be eaten. If the rice does not turn black, it is not necessarily a non-poisonous mushroom and should be eaten with caution. Look at the growing area: Edible non-poisonous mushrooms mostly grow in clean grass or pine or oak trees, while poisonous mushrooms often grow in dark, damp and dirty areas. Look at the shape: Poisonous mushrooms are generally slimy and slippery, and their caps are often stained with debris or have patchy patches. Stalks often have rings on them (like wearing a miniskirt). Non-poisonous mushrooms rarely have rings. Color: Poisonous mushrooms tend to be golden, pink, white, black or green. Non-poisonous mushrooms are mostly coffee, light purple or grayish red. Smell: Poisonous mushrooms smell like potatoes or turnips. Non-poisonous mushrooms smell like almonds or fruits. Look at the secretion: when the fresh wild mushrooms are torn off the stem, the secretion of non-toxic mushrooms is as clear as water, individually as white mushrooms
, and the surface of the mushroom does not change color when torn off; the secretion of poisonous mushrooms is thick and thick, reddish-brown in color, and easy to change color in the air after being torn off. Chemical identification. Take the suspected mushrooms collected or bought back, take out its juice, wet it with paper, immediately add a drop of dilute hydrochloric acid or white vinegar on it, if the paper becomes red or blue, it is poisonous. When picking wild mushrooms, use green onion to rub it on the mushroom cap, if the green onion becomes greenish brown, it proves poisonous, on the contrary, if it does not change color, it is not poisonous. In addition, if there is no certainty that the mushroom is non-toxic, do not eat, if accidentally eaten poisonous mushrooms, should be taken in time to vomit, gastric lavage, diarrhea and other effective measures to deal with, and promptly sent to the hospital for treatment.