at first glance, the iron stick yam is uniform in thickness, usually 1-2 cm in diameter (like an adult's thumb), with a slightly dark skin color and iron red spots on its roots; If the diameter is too thick or the skin is too smooth, it means it is not authentic.

the second balance: the weight of a single stick of iron stick yam generally does not exceed 2 grams, that is, four ounces; It may not be authentic if it is too heavy.

3% discount: when the iron stick yam is broken, it can be felt that its meat is hard and full of powder, and its cross section is delicate, white or slightly yellowish, with less mucus; Ordinary yam is not only not so hard in meat, but also not powdery enough.

Four tastes: Because the iron stick yam contains less water and is rich in yam polysaccharides, its juice is thick, and it tastes dry, greasy and sweet after cooking, and it feels "sweet on the face" at the entrance, accompanied by a faint hemp taste.

Tips: Dioscorea opposita and Dioscorea opposita are actually different. All the Dioscorea opposita produced in Jiaozuo are Dioscorea opposita, and Dioscorea opposita is one of the best products! In addition, pay attention when handling yam at home, because some people are allergic to yam juice, so try not to contact the skin directly!