Chinese yam (Dioscorea opposita)-shan yao (山药)
Tonifies the Qi（氣）and Yin(阴)of Stomach, Lungs, Spleen & Kidneys
Chinese yam (Dioscorea opposita) is called Shan yao (山药) in Chinese. Its tuber is consumed as nutritious tonifying food. It can be steamed,boiled, stir-frying, baked and used in soups. Since the roots of Chinese yam contains allantoin, diosgenin, mucilage, glutamine and other medical compounds, it is used in Chinese herbal medicine. Traditionally it is used to treat disorders related to the stomach, lungs, spleen, and kidneys.
Growing Chinese yam by Jade Institute