The difference between Huaiyam and Tiegun yam is their appearance and origin.

1. The appearance of the two is different

The surface of Huaiyam is yellow-white or light yellow, with longitudinal grooves, longitudinal wrinkles and fibrous root marks, and occasionally light brown skin remains. It is heavy, firm, not easy to break, has a white powdery cross-section, and has a slight bulge if there are tiny dots. It has a slight smell, a light taste, a slight sourness, and is sticky when chewed. The appearance of the iron bar yam is hard and straight, like an iron bar. Tieguang yam is relatively thin, with a khaki or earthy brown skin, smooth skin with white spots, long and dense fibrous roots, prominent hair eyes, tapering and long (20~30 cm) reed heads, sometimes with red irregular spots. The cross section is whiter and the fibers are thinner.

2. The origin of the two is different

Huaiyam is very popular in Anhui, Jiangsu and other places in my country; the origin of Tiegun yam is Wen County, which is located at the intersection of the Yellow River and Qin River. In the enveloping zone of the upper reaches, the Yellow River and the Qin River originating from the Taihang Mountains jointly nourish this land. It has unique natural conditions of being surrounded by mountains on three sides and facing water on one side.

What should not be eaten with yam?

1. Fish and shrimp

Yam cannot be eaten with fish and shrimp. Because in addition to calcium, iron, phosphorus, iodine and other minerals, seafood in general is also rich in protein. If eaten together, it will be synthesized into tannic acid protein, and this substance has a convergent effect, which will cause constipation, increase the absorption of intestinal toxins, and cause symptoms such as abdominal pain, nausea, and vomiting. Therefore, the two cannot eat together.

2. Cucumber

Yam cannot be eaten together with cucumber. Because eating the two together will destroy the nutrients in the yam. In addition, yams cannot be eaten together with pumpkins, carrots, winter squash, etc. Because these foods contain vitamin C-degrading enzymes, if eaten with yams, vitamin C will be broken down and destroyed.

3. Pork liver

Yam cannot be eaten together with pork liver. Because yam contains vitamin C, and pig liver contains trace elements such as copper, iron, and zinc. When vitamin C encounters metal ions, it will accelerate oxidation and reduce its nutritional value. In addition, yams cannot be eaten with bananas. Because yams contain a substance called mannan, both of which are rich in dietary fiber. It can easily cause symptoms such as bloating and abdominal pain.

4. Potatoes

Yam cannot be eaten together with potatoes. Because eating the two together will cause the stomach to secrete a large amount of gastric juice and produce a large amount of hydrochloric acid. If you eat some yams rich in tannic acid at this time, the tannic acid will easily combine with protein to produce precipitation under the action of gastric acid. This can lead to indigestion and, in severe cases, the occurrence of stomach stones.

The above is an introduction to what cannot be eaten with yam. I hope the above content is helpful to you, and I wish you good health and a happy life.