Water chestnut is white, crisp and juicy, mellow and beautiful, and is known as "underground Sydney". Water chestnut is a good dual-purpose fruit and vegetable, and when fruit tastes better than autumn pear; As a vegetable, it can be made into diced water chestnut, sliced water chestnut, shredded water chestnut, winter bamboo shoots, water chestnut and other delicious dishes. In addition, water chestnut can also extract starch, make candied fruit, and process it into water chestnut or water chestnut sugar pile. Eleocharis tuberosa has a high nutritional value. Besides rich water, 21.8% starch and1.5% protein, Eleocharis tuberosa also contains many substances such as calcium, phosphorus, iron, carotene, vitamin B 1, B2, C, etc. In addition, water chestnut also contains the heat-labile antibacterial component-water chestnut, which has a certain inhibitory effect on Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa, and also has a certain effect on lowering blood pressure.

Water chestnut has been used as medicine since ancient times. Chinese medicine believes that water chestnut is sweet and cold, and has the effects of clearing away heat and resolving phlegm, stimulating appetite and promoting digestion, promoting fluid production and moistening dryness, and improving eyesight and sobering up. It is clinically suitable for the treatment of lung dryness due to yin deficiency, cough with excessive phlegm, polydipsia, constipation, drunkenness and lethargy. In the epidemic season of respiratory infectious diseases, eating water chestnut is beneficial to the prevention and treatment of meningitis, measles, whooping cough and acute pharyngitis. The "Xuetang Decoction" made of water chestnut and jellyfish skin can eliminate heat, eliminate phlegm and lower blood pressure, with good curative effect. It is also of great benefit for patients with hemorrhoids to eat water chestnut regularly. Because water chestnut grows in the soil, there are often many bacteria and parasites attached to the epidermis, so it must be washed and peeled before eating water chestnut, so as to avoid the disease from entering the mouth and affecting the health. In addition, because water chestnut is cold, people with spleen and kidney deficiency and blood deficiency should eat carefully.

Water chestnut, also known as "water chestnut", is rich in nutrition and has dietotherapy effect. Here are some health care recipes for reference:

Hypotensive effect: water chestnut combined with jellyfish skin can eliminate heat and phlegm and lower blood pressure. In addition, water chestnut juice, together with fresh lotus root juice, pear juice, fresh reed root juice and Ophiopogon japonicus juice, is called "five-juice drink", which is used to promote fluid production, eliminate heat and lower blood pressure.

Treatment of esophageal cancer: water chestnut 10, boiled with skin, taken daily.

Treatment of throat swelling: Take water chestnut juice cold, each time125g.

Prevention of influenza: 250 grams of fresh water chestnut, sugarcane 1 root, cut into pieces, decocted in a pot, cooked and eaten, which has the effects of clearing away heat, diminishing inflammation, promoting fluid production and quenching thirst, is suitable for upset thirst and low fever in the later stage of fever, and can also prevent influenza.

Promoting bowel movement: 500 grams of water chestnut, cooked and mashed, added with salt, ginger and bean powder, squeezed into balls, fried and picked up. The raw powder is thickened into brine and poured on the pill, which tastes fresh and smooth, can promote digestion and appetizing, and is beneficial to laxative.