How to tell whether the Lu Tu iron stick yam is real or fake? What are the characteristics of Lu Tu iron stick yam?

We all know that there are many varieties of yam. Different yams have different flavors and tastes, and their nutritional values ​​are also different. Lu Tu Tie Gun Yam is one of the more popular varieties. There are often many fake ones on the market. So how do you distinguish the authenticity of Lu Tu Tie Gun Yam? Let's take a closer look!

What is Lu Tu Tie Gun Yam

Lu Tu Tie Gun Yam is a geographical landmark specialty of Wen County, Jiaozuo, Henan Province. Because the soil where yam grows is Lu Tu, the soil is hard and sticky. The planted Tie Gun Yam tastes good and is rich in nutrients. It is precisely because of the good quality of Lu Tu Tie Gun Yam that it is often counterfeited.

There are many names for Chinese yam, including vegetable yam, Huai yam, hemp yam, and iron stick yam, which are so confusing that it is hard to tell them apart. In fact, vegetable yam is hemp yam, and Huai yam is the iron stick yam from Jiaozuo, Henan. Huai yam also has loess iron stick yam and sandy iron stick yam.

How to identify the iron stick yam

Identify by appearance

Loess yam grows in loess soil, which is hard and sticky, so it is more difficult for yam to grow and take root, so the thickness of the grown yam is uneven, generally thicker on the top and thinner on the bottom, with a thinner diameter of 1 to 1.5 cm, and it is crooked. The skin of loess iron stick yam is slightly darker in color, with rust-like raised spots on the surface, dense hairs, and very thin skin.

Because the sandy iron stick yam is grown in sandy soil with soft texture, the yam is evenly thick from top to bottom, with a diameter of about 2.5 cm and a length of 60 to 80 cm. The skin is earthy yellow, densely covered with fine hairs, with purple-red spots, and the skin is very thin.

The thickness of Chinese yam is uniform and the diameter is relatively thick, generally reaching 4 to 5 cm. The surface of Chinese yam is relatively smooth. There are fewer pores, pimples and hairs, and the skin is thicker.

Identify by texture

The loam iron stick yam has less water content and is not easy to break. The sandy iron stick yam has more water content and is easier to break. The hemp yam has more water content and is very brittle and easy to break.

Identify from the cross section

The cross section of the Lu Tu iron pot yam is delicate after being broken by hand, the wire drawing is very fine, the flesh is hard and not easy to break by hand, and it is powdery. It is white or slightly ivory yellow, with less mucus. Ordinary yam not only has less hard flesh, but also breaks easily by hand, has more mucus and is not powdery enough.

Judging by taste

If you want to know the taste of pears, you have to taste them yourself. Similarly, you can also taste the texture to distinguish the real and fake Lu Tu Tie Gun Yams. Lu Tu Tie Gun Yams have less water content and rich yam polysaccharides, so the juice is thicker. After cooking, Lu Tu Tie Gun Yams are soft and sweet, with a delicate taste. Sandy Lu Tu Tie Gun Yams have more water content. They are less sweet than Lu Tu Tie Gun Yams. Vegetable Yams have a high water content and are not soft to eat.

Summarize:

The appearance, taste and cross section of the Lu Tu Tie Gun Yam are relatively easy to distinguish from the vegetable yam. The Lu Tu Tie Gun Yam and the Sandy Soil Tie Gun Yam are both iron stick yams. Although there are differences in taste, it is difficult for inexperienced people to distinguish them from the taste and texture, but they can be easily distinguished from the appearance. Because the appearance of the Lu Tu Tie Gun Yam is relatively short and curvy, and the thickness of the two ends of the yam is different. The thickness of the Sandy Soil Tie Gun Yam is uniform and the diameter is thicker.

What to eat with Lu Tu Tie Gun Yam

First of all, yam can be paired with red dates to better exert its effect on the spleen and stomach. You can cook red dates and yam together or steam them together and eat them.

Secondly, yam and pumpkin can play a role in lowering blood sugar. The pectin, copper and zinc contained in pumpkin can ensure the secretion of insulin, while the soluble fiber contained in yam can also effectively control blood sugar. The combination of the two plays an effective role in controlling blood sugar.

Finally, yam can also be eaten with kidney beans. Kidney beans have the effect of replenishing vitality and enhancing immunity. Cooking porridge with yam can improve the body's immunity to a certain extent. It is suitable for people of different ages.