The mushrooms themselves have a certain bitter taste, blanching can remove this part of the bitter taste, making the fried mushrooms taste more fresh, the mushrooms have a hard texture, not easy to fry, blanching can make the mushrooms cooked in advance, frying is easier to fry, blanching method is to cut the mushrooms into the right size, put them into boiling water, blanching for about 3-5 minutes, fish them out, use cool water to rinse and prepare for use. Rinse and set aside.