Before understanding the nutritional value of iron stick yam and common yam, we must first understand those things of iron stick yam.

Iron stick yam is an excellent ingredient in traditional Chinese medicine, which has the functions of invigorating spleen and stomach, tonifying kidney and astringent essence, promoting fluid production and benefiting lung. Also known as yam, it has always been respected by many Chinese medicine practitioners. The reason is that Chinese medicine attaches great importance to the authenticity of medicinal materials, and the so-called authenticity refers to the drugs of authentic origin. The four major Huai medicines, headed by Dioscorea opposita, are the representatives of authentic medicinal materials.

Having said that, I believe everyone knows that the nutritional value of iron yam is higher than that of ordinary yam. In addition to the high nutritional value and low yield, iron stick yam has become a tribute of the court in the Ming Dynasty, so it will be more expensive than ordinary yam.

Second, how to distinguish iron stick yam from ordinary yam?

At present, in the market, because the price of iron yam is relatively expensive, many vegetable yams are sold as Tieshan medicine. Therefore, everyone needs to carefully distinguish when buying to prevent being cheated.

1, character

The thickness of iron stick yam is generally around 1- 1.5cm, with a round head and a pointed tail; Yam is relatively thick, about 4-5cm.

2. epidermis

Iron stick yam epidermis generally has more pores and bristles; However, yam has smooth epidermis and sparse pores.

Step 3 taste

Because the iron stick yam has less water content, it is dry and sweet after cooking; Yam is easy to cook, but because of its crisp taste, it is often used in fried food or cold salad.