The temperature of soybean milk should be controlled at about 80 degrees, so as to avoid the temperature being too high or too low, and the bittern should be ordered slowly, so that the bittern and soybean milk can be mixed evenly, so as to avoid the situation that the old and tender are different.

In the process of marinating, control the stirring speed, slow first and then fast, so that the brine and soybean milk can be fully mixed to avoid the situation that the tofu is too old or too tender.