You cannot eat the yam peel from Tieguang because it tastes bad and your skin will itch after coming into contact with the yam peel.

Tiegun yam cannot be eaten with the skin on. It must be peeled before eating. And a few people's skin will itch after coming into contact with yam skin, so direct contact should be avoided when peeling. And yam cannot be eaten raw because raw iron rod yam contains certain toxins. When buying iron bar yam, pay attention to the color inside. If it is white, you can buy it. If it is yellow, don't buy it.

Tips for peeling yam

1. Iron rod yam skin can be steamed first and then peeled. The steamed yam will be like a sweet potato and is very easy to peel.

2. Cut the yam into sections, and then peel it slowly with an apple knife. Gloves are required during peeling.

3. Use a clean steel wool ball, because the yam skin of iron rod yam is very thin and can be easily wiped off.

Reference for the above content? Baidu Encyclopedia - Iron Bar Yam