1. Steam and peel the yam.

2. Yam skin contains a certain amount of plant alkaloids. This ingredient is irritating to the human body and is an allergic substance. The plant alkaloids will dissolve in the yam meat during cooking and may appear when eaten. Allergies such as itching of the throat, swelling of the throat, and difficulty breathing.

3. The yam can be cooked by steaming it for about 15 minutes, but the specific situation still depends on the size and condition of the yam. When steaming yam, sliced ??yam is easier to mature and takes about 8 minutes. Thick yam can be steamed for a while longer, about 15 minutes. For yam segments, it is best to steam for about 20 minutes. If you use a pressure cooker, the speed will be faster. The flakes take 5 minutes, the thick blocks take about 10 minutes, and the ammunition section only takes about 15 minutes.