Flammulina velutipes: It contains protein, fat, crude fiber, vitamin B 1, B2 and other B vitamins, as well as eight amino acids and other beneficial components needed by the human body, and has a high zinc content, which can promote the brain. When purchasing Flammulina velutipes, you should choose pure white, light yellow or yellowish brown, fresh and shiny, with certain moisture, and no spots, defects and shrinkage on the lid and stem. Volvariella volvacea: The meat is crisp and tender, and it tastes delicious. Volvariella volvacea has high vitamin C content, which can promote human metabolism and improve immunity. But also can slow down the body's attraction to carbohydrates, which is suitable for pregnant diabetic mothers. Pleurotus ostreatus, also known as Pleurotus ostreatus, contains trace elements such as protein, sugar, fat, vitamins, iron and calcium, and is rich in amino acids. Long-term consumption can reduce high blood pressure and cholesterol.