1, look at the diameter

The iron stick yam is uniform in thickness, usually 1-2 cm in diameter (such as an adult's thumb), the epidermis is slightly darker in color, and there are iron-red markings on the rootstock; if the diameter is too thick or the epidermis is too smooth, this means it is not authentic.

2, see rust

The iron stick yam broken, you can feel its meat is harder, powdery enough, its section is delicate, white or slightly tooth yellow, mucus less; ordinary yam not only meat is not so hard, and the powder is not enough.

3, taste

Because of the iron stick yam in the water content is less, rich in yam polysaccharides, therefore, its liquid juice is thicker, after cooking taste more dry, sweet, sweet flavor, the entrance feel "face and sweet", and accompanied by a slight numbness.

4, folded

The iron stick yam broken, you can feel its meat is harder, powder enough, its section is delicate, white or slightly tooth yellow, less mucus; ordinary yam not only meat is not so hard, and powder is not enough.

Yam has the functions of strengthening the spleen, tonifying the lungs, fixing the kidneys, benefiting the brain, making the brain wise, nourishing the face, anti-aging, anti-tumor, anti-fatigue, anti-harmful substance stimulation, regulating the metabolism, enhancing the immune function, promoting growth, regulating the endocrine system, regulating the renal function, stimulating the blood-producing system, and regulating the nervous system, and it is the species with the highest medicinal value and the best tonic effect among the yams in Huaiyao.

Frequent consumption, not only can enhance physical fitness, nourish the skin, delay aging, but also on the kidney deficiency lumbago, dysmenorrhea, kidney deficiency and essence loss, loss of appetite, eating less sugar, spleen deficiency and diarrhea, lung deficiency and chronic coughing, obesity and so on quite a good effect.

Expanded Information:

Yam has a thick and thin points, thick called vegetable yam, vegetable yam also has two kinds, one is the surface of a lot of pea marijuana points called hemp yam, eat up the face of the face of the soup with more; the surface of the surface does not have hemp points called brittle yam, eat up the The surface without hemp spots is called crispy yam, which tastes crunchy and is used more for stir-frying. The medicinal use of some of the fine, Huai yam is also known as iron yam, the main production area of Henan Jiaozuo, where the iron yam powder strong, taste better, dense texture, dry products with water bubbles sunk to the bottom of the water.

The quality of yam is superior, high medicinal value, yam slices are rounded thick slices, the surface of the white or yellowish white, brittle, easy to break, the cut surface of the white, odorless, chewing sticky. After processing and concocting yam is often twice as effective, such as the yam with wheat bran fried later into the medicine, can enhance the effectiveness of the spleen and stomach. For the spleen deficiency, less food, diarrhea, excessive leukorrhea patients choose bran fried yam effect will be better.

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