Yongning Tofu Yongning Tofu has been recorded since the Han Dynasty, and it became a court tribute in the Qing Dynasty. There was a history of making tofu by every household. The tofu in Yongning Ancient City has been passed down to this day with its unique production technology and rich nutritional value. Yongning is surrounded by mountains on three sides, and mountain springs gather underground from three sides, which is rich in minerals such as calcium, iron and magnesium. The salinity and total hardness of water are very suitable for tofu processing. Local processing tofu is to use "sour pulp" to order tofu, which is more tender and smooth, and they have developed a tofu feast locally to promote tofu consumption. Yongningzhen established a bean product production and marketing association, registered a trademark, applied for a technology patent, united bean curd makers from one household, unified production and sales, and strengthened the market competitiveness.

Yongning is an ancient city in Ming and Qing dynasties. Since the Ming Dynasty, it has been circulating beyond the Great Wall: "From Nanjing to Beijing, you should eat tofu to Yongning". There is also a local folk proverb about tofu: "It is yellow when it is carried on the case, and it is alive all over the body. When the knife is pulled, the stubble is thin, it is cotton in the hand, thin when it is put in the mouth, tough when it is cooked in the pot, and empty when it is fried." It shows that the tofu in Yongning ancient city is extraordinary.

The tofu in Yongning Ancient City is delicious and civilized. Its fame is due to Yongning's water, high-quality soybeans and exquisite craftsmanship.

Yongning area is located at the eastern edge of Yanhuai Basin, surrounded by mountains in the north, east and south. Mountain springs gather in Yongning underground from three sides. The water quality is clear and mellow, and it is rich in minerals such as calcium, iron and magnesium. The salinity and total hardness of water are very suitable for tofu processing. It can be said that there would be no tofu in Yongning ancient city without water.

The raw materials of tofu in Yongning Ancient City are selected from high-quality soybeans in the local green agricultural products base. Soybean is not only excellent in variety, but also free from chemical fertilizers and pesticides, and there is no pollution around it. It is a natural pollution-free food, rich in iron, phospholipids, cellulose and phytoestrogens. It can be said that processing tofu with the water of Yongning ancient city is due to nature.

The legend of tofu began in Liu An, the king of southern Han and Huai, with a history of 2 years. Because tofu contains high protein, low fat and no cholesterol, it has rich nutritional value. No wonder Yuan Mu, a writer in Qing Dynasty, said, "Tofu tastes better than bird's nest."

first, smart motivation. Soybean is rich in phospholipids, which is an important substance for building a smart brain. Because 2%-3% of human brain is composed of phospholipids, eating tofu can increase the release of acetylcholine, thus improving people's memory and acceptance. The plant protein in soybean is the basic raw material for the brain to engage in complex intellectual activities. Increasing the plant protein content in food is to increase the excitement and inhibition function of the cerebral cortex. , improve work efficiency.

second, whiten the skin. Soybean contains phytoestrogen, which has similar effects to estrogen, but has no side effects of estrogen. It is called a health messenger to stay and protect face. At present, there is a fashion among Japanese women, which is called "eating soybean milk to whiten skin".

three or five effects of anti-cancer. Soybean contains at least five substances with anti-cancer effect. Proteinase inhibin, phytase, phytosterol, saponin, isoflavone. New york University found that protease inhibin in soybean can inhibit protease skin cancer, bladder cancer, breast cancer, colon cancer, lung cancer, pancreatic cancer, oral cancer, etc., and the effect is peculiar.

Fourth, prevent cardiovascular and cerebrovascular diseases. Soybean saponin has the functions of reducing blood lipid, antioxidation, anti-atherosclerosis and immunomodulation. Potassium is an essential trace element for human body, and the decrease of potassium will lead to heart failure. Using bean products is one of the effective ways to supplement potassium. Phytosterols in soybeans enter the human body and compete with cholesterol, effectively reducing cholesterol absorption, which is very beneficial to the prevention and treatment of heart disease and stroke.

5. prevent deafness. Soybean has a high iron content. Supplementing iron can dilate microvessels, soften red blood cells, ensure blood supply to ears, and effectively prevent hearing loss.

The tofu of Yongning ancient city in Yanqing has been recorded since the Han Dynasty, and it became a court tribute in the Qing Dynasty. Every household once made tofu. With its unique production technology and rich nutritional value, the tofu of Yongning ancient city has been passed down to this day, and it is the top grade in disease prevention, health care and food.