Whether ginger should be peeled depends on the effect you want to achieve. If it is to be used as a seasoning when stir-frying, then there is no need to peel it; you can use it directly with the skin on. If you want to use ginger for medicinal purposes, then it depends on the specific situation. Let me teach you a clever way to peel ginger using a beer bottle cap.
The ginger peel itself is also a traditional Chinese medicine, with a cool nature. Ginger itself, on the other hand, has a warm nature. The two have opposite properties. Simply put, the flesh of ginger promotes perspiration, while the ginger peel stops it. Therefore, if you want to achieve a warming and dispersing effect, the ginger should be used after peeling.
Here's a good method for peeling ginger:
You can easily remove the ginger peel without spending any money and without wasting much of the ginger. When I used a knife, I often ended up cutting off a lot of the flesh. A piece of ginger isn't that big to begin with, and it would become much smaller after peeling. This small tool can easily peel the ginger while retaining the flesh to the maximum extent. And that tool is a beer bottle cap! It's a way to recycle waste, it's free, and it really works. Just gently scrape it over the surface of the ginger, and the peel comes off easily, and only a thin layer at that!