Yam is a plant belonging to the family Dioscoreaceae. It is also known as yam, yam, potato, yam, < a href = "UNK1.htm?"? lemmaId=34442863& SS _ C = ssc.citiao.link "> White yam , Mao yam, light yam, etc., can be used as food, but also can be used as medicine.Its shape is cylindrical, relatively straight, slightly curved, about 15-30 cm in length, with longitudinal grooves on the surface and milky white inside.Yam originated in Asia, China's cultivation has a long history, now mainly distributed in Shanxi, Shandong, Henan, Shaanxi and other places, like to grow in warm sunny places, cultivated soil need to maintain fertile, good drainage, fear of cold, can not withstand frost.
Huaishan is mainly produced in the vicinity of Jiangsu and Anhui, and only those produced in this area can be called Huaishan.It has a denser texture and contains more water.It is mainly used as a medicinal material with high nutritional value.After cutting Huaishan, it can maintain milky white for a long time and will not easily turn yellow.