In order to prevent bamboo shoots from biting people, you can put them in a pot and blanch them for about 3 minutes before cooking, or you can soak them in yellow wine for about 5 minutes before rinsing them. The main reason for the numbness of bamboo shoots is that fresh bamboo shoots contain a lot of oxalic acid, which will stimulate the cavity mucosa after eating. The above method can remove most oxalic acid and reduce the taste of hemp.