Iron stick yam is one of many varieties of yam, and it is a fine product in Huai yam. Iron stick yam has traces similar to rust, so it is named iron stick yam. Iron stick yam has good nutrition and high medicinal value, and has been used as medicine in ancient books. Wen county, Jiaozuo, Henan Province is the geographical indication producing area of iron stick yam. According to the different cultivated soils, iron stick yam can be divided into sandy soil and loessial soil.
Edible
As a kind of food and vegetable, yam is delicate, smooth and unique, and can be made into spun yam, jujube paste yam and so on. Yam is tender, rich in nutrients and health-care substances, and is an excellent health-care food.
Shennong's Herbal Classic says, "Tonifying the middle energizer can make up deficiency, dispel cold and heat, tonify the middle energizer, strengthen tendons, and it will be effective after long-term service"; "Rihuazi Materia Medica" says that it "helps the five internal organs, strengthens the bones and muscles, calms the nerves, and is mainly used to drain the essence and forget"; Compendium of Materia Medica holds that yam can "benefit kidney qi, strengthen spleen and stomach, stop diarrhea, stop paralysis and moisten fur".
Recent studies have shown that yam can induce interferon and enhance human immune function. Choline and lecithin contained in it are helpful to improve people's memory. Regular consumption can strengthen the body and delay aging, so it is a favorite health care product. Yam and konjac food is rich in nutrition, nourishing and beautifying, and it is a rare healthy and nutritious food.