Steamed yam needs peeling. We often see in recipes that after yam is processed, there will be peeling steps. Many people may find it strange that it is easier for yam to be peeled, so why go before steaming yam? In fact, yam skin contains a certain amount of plant alkaloids, which are allergic substances and have certain irritation to human body. In the cooking process, due to high temperature, plant alkaloids will dissolve in yam meat. For some people with weak constitution, allergic symptoms may occur when eating.

Second, how long does it take to steam yam?

Generally speaking, Chinese yam can be cooked only by steaming 15~20 minutes. However, the time of steaming yam is related to many factors such as the size of yam, cooking pot, firepower and so on, so this time is not absolute. If it is our daily cooking pot, yam will be cut into small pieces and steamed for 20 minutes. If you cook yam in a pressure cooker and cut it into small pieces, it usually takes only 10 minute for the temperature to exceed 100 degrees Celsius.