1. The skin of yam beans is edible. The shape of yam beans and yam are not similar, but their external tissue structure is similar. The skin of yam beans is very thin, not hard in texture, non-toxic and non-irritating, and contains rich starch components, so it can be eaten.

2. The nutritional content of yam bean skin is equivalent to that of yam beans, and the nutritional content of yam bean skin is equivalent to that of yam. Therefore, yam bean skin is rich in starch, cellulose, mucin, saponin, and a small amount of fat. , minerals, carotene, folic acid, vitamin A, vitamin B family, vitamin E, etc., rich in nutrients.