Mullein is a common food that does not possess hot or benign properties, but can provide the body with protein and other nutrients. 100 grams of fungus contains 25 calories, of which 6.75 grams of carbohydrates, 0.48 grams of protein, 0.04 grams of fat, 0.6 milligrams of vitamin C, 16 milligrams of calcium and 0.56 milligrams of iron. Moderate consumption of fungus can provide the body with the above nutrients, fungus can be combined with meat, staple foods and other food together to increase the diversity of food, beneficial to human health. In the soaking process of the fungus, must pay attention to not too long, otherwise it is easy to be contaminated by Pseudomonas aeruginosa, which produces mithramycin, causing abdominal pain, nausea, vomiting and other food poisoning, and in serious cases can lead to death. People who are allergic to fungus should not eat fungus.