Soak soybeans, grind them into slurry, and solidify them to obtain tofu.
Tofu is sweet and cool. It is a nourishing, heat-clearing and health-preserving food. Regular food can tonify the middle energizer, clear away heat and moisten dryness, promote fluid production and quench thirst, and clean the stomach.
Tofu not only has the function of increasing nutrition, helping digestion and stimulating appetite, but also has the function of supplementing calcium, which is also quite beneficial to the growth and development of teeth and bones, and is known as "vegetable meat".
There are many kinds of tofu, the common ones are south tofu and north tofu.
The difference between north and south tofu lies in the different coagulants used. Bittern (calcium chloride or magnesium chloride) is used for north tofu, and gypsum (mainly calcium sulfate) is used for south tofu.
North tofu, also known as brine tofu and hard tofu, is made of brine as coagulant.
Its texture is rough, and the cut surface is not as smooth as that of south tofu. Beidoufu is slightly yellow in color, with high calcium content, no less than milk, and the calcium supplement effect is better. More suitable for frying, frying, steaming, frying and other cooking techniques, such as frying tofu.
South tofu, also known as gypsum tofu, takes gypsum liquid as molding agent, and the chemical composition of gypsum is calcium sulfate.
South tofu is white in color, soft and tender in texture and poor in toughness. Because of its high water content, it is easy to be broken, so it is not suitable for frying, but more suitable for cooking techniques such as cold salad, steaming and soup making. For example, onion mixed with tofu, preserved egg tofu with onion oil, tofu soup.
There are other kinds of tofu, which need to be carefully identified for their nutritional value. Almost all people, including patients with gout, hypertension, diabetes, fatty liver and obesity, can eat properly cooked and reasonable common North-South tofu.
Tofu is easy to digest and absorb, and has the functions of lowering blood pressure, blood fat and cholesterol, which is very beneficial to the growth and development of teeth and bones. Variety, can be eaten raw, suitable for all ages, is a good food for health!