Removing the skin of iron stick yam depends on the cooking method. If it is stir-fried yam, it should be cleaned and removed with a paring knife. If it is a steamed yam, directly cleaned and put into the steamer for steaming, cooked, and then remove the skin of the yam to eat. If you are steaming yam, you may not need to remove the skin first, just cut the yam into 3 small sections or 2 small sections, depending on the length to determine the number of sections. Then clean and put into the steamer to steam on the line.