How to pick the good or bad of yams, how to distinguish the good and bad of yams

There are still many ways.

First, look at the "heart line". There is no heart line in the middle of the yam slices, whereas there is a heart line in the middle of the tapioca chips, and although the heart line is small, it can be seen if you look closely. Some cassava chips are thinly shaved, and after drying, the heart thread tends to fall out, but if the heart thread falls off, it will leave a small hole.

If there is a small hole in the middle, it must be cassava chips.

Second, look at the edges. The skin of the yam is very thin and is peeled clean before slicing. Whereas, tapioca skin is much thicker than yam skin.

Some cassava the size of a thumb are too small to peel and difficult to peel, and counterfeiters often don't bother to peel them, so after they are cut into dry slices, thick skins remain on the edges. Whoever has thick skin will be a false yam.

3. Distinguish the real from the fake. Dried yam slices contain a lot of starch, and when you touch it with your hands, it feels more delicate, and there will be more starch sticking to your hands. Although cassava also contains a lot of starch, it has more crude fiber than yams, and it feels coarser to the touch than yams, and there is less starch left on the hands.

Yam to choose iron stick yam, the epidermis is a little purple skin is better, now the iron stick yam on the market is mixed, to learn to choose correctly, according to my understanding is divided into two kinds, one is the authentic Wenxian iron stick yam, the other is the small white mouth yam in Hebei, Shandong Shadi yam as the representative of other production areas of yam.

There are two kinds of authentic Wenxian iron stick yam, which are divided into the soil iron stick yam and the sand iron stick yam, the soil is hard and fertile, and the yam is easy to be squeezed by the hard soil and grows slowly, and the quality is good. There are traces of rust on the authentic iron stick yam, which is why it is named iron stick yam. Iron stick yam is nutritious and valuable, and has been included in ancient records.

Yam, the name of Chinese medicinal materials. This product is the tuber of dioscis plant. 11 Dig in December, cut off the roots, wash the soil, scrape off the skin with a bamboo knife, and dry it in the sun or dried, that is, the hairy yam.

Choose a coarse hairy yam, soak it in water, add a slight heat, and cover it with a quilt to keep it moist and stuffy, then put it on a wooden board and knead it into a cylindrical shape, cut the two ends together, dry and light, that is, the light yam. The main functions are: strengthening the spleen, tonifying the lungs, strengthening the kidneys, and benefiting the essence.

Treatment of spleen deficiency and diarrhea, diarrhea, diarrhea, fatigue cough, thirst, spermatozoa, belt down, frequent urination. Nourish the spleen and stomach, nourish the lungs, and nourish the kidneys. It is used for spleen deficiency, lack of food, long-term diarrhea, lung deficiency, wheezing and coughing, kidney deficiency and spermatozoa, belt down, frequent urination, deficiency heat and thirst.

Stir-fried yam with bran to nourish the spleen and stomach. It is used for spleen deficiency, less food, diarrhea, loose stools, and excessive leucorrhoea. The Book of Books:

In the main injury, replenish the deficiency, remove the cold and heat evil qi, replenish the strength of the body, grow muscles, and serve the ears and eyes for a long time. "Don't Record": The main head and face swim in the wind, the limelight (a 'head wind') dizziness, lower breath, relieve low back pain, cure weakness and thinness, fill the five organs, remove heat irritation, and strengthen the key.

Treatise on medicinal properties: make up for five labors and seven injuries, go to cold wind, stop low back pain, calm the heart, replenish the lack of heart qi, suffer from human body deficiency, and use it. "Dietary Therapy Materia Medica":

Cure headaches and help yin. "Rihuazi Materia Medica": help the five organs, strengthen the muscles and bones, soothe the nerves for a long time, and forget the main essence.

Zhu Zhenheng: Raw pounding paste is swollen and hard and poisonous, and it can dissipate. "Typhoid Fever Essentials":

Make up for deficiencies and clear away deficiency and heat. "Compendium": Nourishing kidney qi, strengthening the spleen and stomach, stopping diarrhea, dissolving phlegm and salivation, moisturizing the fur.

1. From the outside. **The smoother is the crispy yam, which is suitable for stir-frying; If it is a stewed soup or dessert dish, it is recommended to choose a noodle yam, the taste will be sweet and glutinous, full, and the characteristics of the noodle yam are that there are many pockmarks on the body, many whiskers and smooth.

2. Look at the appearance again. Slightly flattened, with a little curved head, brownish-yellow in color; or the stem is straight and firm; Or in the shape of small hands, they are good yams. If there are raised bumps, the texture may be slightly harder.

3. When buying, you can break a little skin, or look at the cut noodles of the yam, the meat is white, and the juice is viscous is the fresh yam; When the frozen yam is cut, the flesh inside is red like rust, and it has a hard heart, and the juice is like water.

Yams with no damage to the outer skin and mucus are the best; More mucus, less water, and good quality.

Yams are afraid of frost and fever, and you must pay attention to buying yam in winter: hold the yam with your hand for about 10 minutes, if the yam sweats, it is frozen, and if it is feverish, it has not been frozen.

Untie the yam to see, the frozen cross-section mucus into water, frozen warmed up with a hard heart, and the flesh color is red, and the quality is poor.