Tofu is the most common bean product, also called water tofu. According to legend, it was invented by Liu An, the king of Huainan in Han Dynasty. The main production process is pulping, that is, soybean is made into soybean milk; The second is solidification, that is, soybean milk solidifies into a gel containing a lot of water under the action of heat and coagulant, which is tofu.

Cut a piece of tofu three times and you can cut up to 8 pieces. This is a mathematical logic problem, which tests the spatial thinking ability and can be deduced by hypothetical method. If you cut a piece of tofu into three knives and cut them on the same plane, you can only get 6 pieces of tofu at most; If the three knives are not on the same plane, you can cut up to 8 pieces of tofu, that is, two knives are cut vertically on one plane and one knife is cut horizontally on the other plane, so that the three knives are not on the same plane, but on two different planes.

Nutritional value of tofu

Tofu is nutritious and contains a lot of high-quality protein. Its protein amino acid composition is similar to that of animal protein, and the human body's digestion and absorption rate of tofu is very high, reaching over 95%. In addition, tofu is rich in vitamins, phytosterols, unsaturated fatty acids, soybean isoflavones, saponins, lecithin, sugars and trace elements such as calcium, iron, phosphorus, potassium, magnesium, zinc and selenium. Tofu is a nutritious food with high protein and low fat. Regular consumption is beneficial to supplement all kinds of nutrients needed by the body.

The benefits of eating tofu

1, calcium supplementation

The content of calcium and magnesium in tofu is higher than that in soybean due to the addition of brine during processing. According to the determination, every 100g of tofu contains about 164 mg of calcium, which is a good calcium supplement food, especially suitable for people with calcium deficiency.

2. Promote brain development

Although tofu has been processed, it still retains lecithin contained in soybean, which is an important substance to promote the development of brain and human nerves. Eating tofu often helps to enhance intellectual development and improve memory.

3. Improve menopausal syndrome

Tofu is rich in phytoestrogen-soybean isoflavone, which is similar to estradiol secreted by women's ovaries, and has a two-way regulation effect, which can keep the estrogen in women's bodies in a balanced state all the time, thus improving menopausal syndrome. In addition, soybean isoflavones in tofu can also reduce the risk of breast cancer.

Step 4 supplement nutrition

Tofu contains eight essential amino acids, and protein in tofu is completely protein, which is more conducive to human digestion and absorption. In addition, tofu is also rich in B vitamins and a variety of trace elements, which is a good supplement for malnourished people.