A better way is to wash the yam skin, and it is best to wear gloves or put a fresh-keeping bag on your hand before peeling it. Or prepare a pot of boiling water, wash the yam and throw it directly into the water to boil. In this way, the yam skin is basically cooked, the original allergen is destroyed, and it will not be allergic if it is contacted again. Moreover, after the yam is out of the pot, it can be easily taken out by gently cutting a knife from top to bottom with a kitchen knife. But be careful not to cook for too long, it is best to cook the whole root instead of cutting it.

If you haven't taken measures before, you will have one's fingers itch. You can try the following methods: first, wash your hands, then put vinegar on your hands, and don't even fall under your nails. After a period of time, this itching will gradually disappear, which is the result of acid-base neutralization. Second, you can also put it on the fire, flip the palm of your hand repeatedly, and make your hand hot, which can decompose the saponin that permeates your hand. But be careful not to burn your skin. Third, rubbing your hands repeatedly in rice can also relieve itching.