Yam is more and more popular among the public because of its relatively high nutritional value. Foreigners call it "Chinese ginseng." Yam is divided into vegetable yam and iron stick yam. The iron stick yam nutrition is higher than the vegetable yam, and the price is nearly doubled. Therefore, some black-hearted vendors try their best to use ordinary yam to pretend to be the iron yam to make a profit. Today, Xiaobian will introduce the main differences between the iron stick yam and the vegetable yam for your reference.
Tie Kun Yam
Iron stick yam is one of the most famous ingredients in traditional Chinese medicine. It is one of the famous specialties of Jiaozuo in Henan. The iron stick yam is rich in protein, vitamins and various amino acids and minerals, which can not only replenish spleen, lung and kidney, but also Nourish the yin of the spleen, lung and kidney, and it is the treasure of Qi and Yin.
Vegetable yam
Ordinary yam is commonly known as vegetable yam, mainly used in dishes, and has a nutritional value. In terms of taste, ordinary yam is divided into two types, one is relatively brittle (water yam), and the other is relatively "face" (bull leg yam). The skin is relatively smooth and is a crispy yam. It is suitable for frying. If it is a stew or a dessert, it is recommended to choose a yam. The taste will be sweet and full. The yam is characterized by more pitting, more and more smooth.
The difference between iron stick yam and vegetable yam
shape
The weight of the iron yam is about 1-1.5 cm thick, the length does not matter, the head is round and pointed; the vegetable yam is very thick, the thickness can reach four or five centimeters thick, and the shape is irregular.
epidermis
There are purple spots on the epidermis of iron sticks, and there are pores and hairs distributed densely. It should be noted that if the yam is finished, the above hairs will fall off. This can not be judged on the basis of the pores. The epidermis is smooth, and the pores and hairs are scattered.
Drug quality
It can be seen from the yam break: the texture of the iron yam is very delicate and firm, that is to say, the fiber is very fine and firm, which is the origin of the iron yam and is not easy to break; while the vegetable yam has coarse texture and water, and is pinched by hand. You can squeeze out the water, the longer the water, the more you will break when you touch it.
weight
The single weight of the iron stick yam generally does not exceed 200 grams, which is four or two; too heavy may not be authentic.
Ordinary yam is different in size and weight.
Taste
The iron yam has less water content and rich sugar content. Therefore, its liquid juice is thicker, and it does not simmer for a long time. The taste is “dry and sweet†with a slight tingling smell;
Ordinary yam tastes crisp, and it is easy to cook in the water for a long time.
How to identify iron stick yam
A look: the iron stick yam is uniform in thickness, usually 1-2 cm in diameter (like an adult thumb), the skin is slightly dark, and the rhizome has iron red marks; if the diameter is too thick or the skin is too smooth, it is not authentic.
Erqi: The single weight of the iron stick yam is generally around 200 grams; too heavy may not be authentic.
Tri-fold: Break the iron stick yam, you can feel the meat is hard, powdery foot, its section is fine, white or slightly yellow, less mucus; ordinary yam is not only not so hard, and powder is not enough.
Four tastes: Because the moisture content of the iron yam is small, the yam polysaccharide is rich in content, so the liquid juice is thicker, the taste is dry and sweet after cooking, and the mouth feels “face sweet†with a touch of numbness .
What kind of people is suitable for eating yam:
1, those with low digestive function, or suffering from gastrointestinal diseases that cause digestion and absorption of common foods are more difficult.
2, need to enhance physical fitness, improve immune function, and add calcium, strong bones and teeth.
3, want to improve memory, prevent coronary heart disease, fatty liver, obesity, Alzheimer's disease.
4, increase skin elasticity and moisturizing function, keep the skin smooth and moist, weight loss is also applicable.
5. Women, men, children and adolescents who need to supplement multivitamins and iron, zinc and copper.
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