Beef skin dish, also called thick skin dish, is also called thick mixed dish in Chaoshan area, and its proper name is tribute dish or Bida dish. It is a biennial herb with seedlings or leaves as vegetables. Cowhide is native to the Mediterranean coast of Europe. According to the color of petiole, it can be divided into three types: white stalk, green stalk and red stalk. In recent years, China has introduced red stem cowhide from England, which has many uses, such as vegetable, feed and ornamental.

Niupicai contains protein, fat, dietary fiber, carbohydrate, carotene, vitamin B 1, vitamin B2, vitamin C and nicotinic acid. It also contains potassium, sodium, calcium, magnesium, iron, manganese, zinc, copper, phosphorus and other essential trace elements. The dietary fiber of cowhide can promote gastrointestinal peristalsis and digestion; Cowhide is an alkaline vegetable. Regular consumption is beneficial to the acid-base balance in the body.

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Pay attention to the consumption of cowhide vegetables:

1. Cowhide is rich in oxalic acid. Oxalic acid will react with calcium to produce water-insoluble calcium oxalate, so that calcium in food cannot be absorbed and utilized by human body. Therefore, cowhide can't be eaten with milk, beans, eggs and shrimp seafood at the same time, such as loach, mussel, snail and shellfish, which are all high in calcium.

2. Cowhide vegetable is cold, which has the functions of clearing away fire and expelling wind, detoxicating and killing insects, stopping leukorrhagia and regulating menstruation, and can relieve symptoms such as exogenous wind-heat and irregular menstruation. People with spleen and stomach deficiency and cold should be careful to eat.

3. After 30-40 days of field planting, the purple sweet potato can be peeled and utilized, with 3-5 leaves peeled from each plant and 4-5 leaves left to continue growing. ? Decide how many leaves to peel according to the season and growth.

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