The brine used to make tofu is called brine, which is actually bittern. The by-product of drying sea salt is also waste, which can coagulate plant protein. So when it was mixed with soybean milk, protein solidified into bean curd, and then put it into a mold to squeeze out excess water. I was curious, too. I always wanted to touch some shiny stones with my hands, but my family wouldn't let me, saying it was poisonous. I don't understand anyway. Adults taught me not to eat. Now when I grow up, I know that the bile water we use is actually salted slices bought in the sun and poured into a container. After adding water and stirring, it becomes brine, and we can use it to order tofu. Jiang, our boss, said that brine tofu is more delicious than gypsum tofu, and gypsum tofu has higher output than brine tofu. Gypsum tofu.

This brine made in the north is added to soybean milk at the ratio of 2: 100 each time, stirred and covered. After about 20 minutes, soybean milk becomes tofu brain, which is squeezed on the basis of tofu brain, that is, dried tofu. When I was a child, after the 23rd of the twelfth lunar month, every household began to prepare new year's goods. Steaming steamed bread, making tofu, killing pigs and making minced meat are indispensable. Whenever this time, it is also the happiest time for our children. It is fun and can eat delicious food that is rarely eaten at ordinary times.

The water in the pool naturally evaporates in the sun for a few days, and the water temperature rises to 28 degrees Celsius, which becomes the brine we know to order tofu. Of course, it has other uses. Later, when I grew up and went to high school, I realized what was going on. The brine used at that time was the concentrated solution of the seaside salt drying field. When seawater is saturated after being exposed to the sun, sodium chloride and salt are separated out. After accumulation, the residual night separated from the roots is the brine with the highest concentration.

In fact, there are many kinds of water that can be used to order tofu, but in our countryside, gypsum powder has always been used to order tofu. The tofu made by this method is thick and can be used to make all kinds of bean products without breaking. Tofu sold in the city is tender enough to turn into a lot of tofu brains to take home.