2. Be careful not to cover the lid during the blanching process of Pleurotus ostreatus, because all mushroom ingredients such as Pleurotus ostreatus have a special fishy smell and can be evaporated by steam. If you cover it, the effect of removing fishy smell will be much worse. Don't squeeze it by hand after cooking, because the squeezed juice contains more nutrients and umami substances, and the edible fungi such as Pleurotus ostreatus have poor taste after squeezing.