1, the appearance is different: the head of yam is thicker, the tail is thinner, the epidermis is smooth, and there are no rust-like spots. Hu Aishan Mountain is relatively uniform in thickness, slightly darker in skin color, with many pits and iron-red spots on its roots, which are not easy to be washed away.

2, the texture is different: the moisture content in yam is relatively high, and the surface will turn yellow soon after cutting. Hu Aishan Mountain is fine and hard, and its section is milky white.

3. Different producing areas: Yam is widely produced, and it is planted in the north and south of China. The origin of Hu Aishan is near Jiangsu and Anhui, and only what is produced there can be called Hu Aishan Mountain.

4, cooking time is different: Yam takes a long time to eat, while Hu Aishan only needs to cook for 6 to 7 minutes to achieve the feeling of melting in the mouth.