1. Observe the size of Chinese yam. When we buy yam, if we want to distinguish the quality of yam, we must first start with the shape of yam. In general, we suggest that you buy some yam that looks stout at ordinary times. Even after peeling, this yam is rich in pulp components and tastes good. If you buy some slender yam, there is often no pulp in it.

2. Look at the section of yam. In addition, you can also look at the cutting method of yam. If the cut color is yellow or other colors, and it is dry, it is not recommended that you buy such yam. Generally, after being left for a long time, yam loses its moisture and becomes stale. If it is found that the cut part is full of water and the color is white, then it is basically safe to buy such yam.

3. Touch the skin of yam. We can also touch the skin of yam. Generally, if the skin feels refreshing, you can buy it with confidence. But the skin feels wrinkled and yellow. It is not recommended that you buy this kind of yam. Generally, it has been left for a long time, and the water inside loses a lot. Even if it is eaten at home, the taste is not particularly good.

4. Look at the color of yam. If the skin color of yam appears black, it is not recommended to buy it. Normal yam skin is brown in color.