1. Soak it in salt water. This is also an old method that used to be used without refrigerators. First of all, add salt to the water, the ratio of salt and tofu can be 1:10, that is, 100 grams of tofu put 10 grams of salt. Then turn on the heat and bring the salted water to a boil, wait for the salted water to cool and then put the tofu in it. You can put it in a cool and ventilated place, and it can be kept for at least 10 days without losing its flavor, and if you put it in the refrigerator to keep it fresh for a longer period of time. Salt will sterilize the tofu and make it last longer. Boiling the salt water is to kill the bacteria in the water.

2, refrigerator preservation, if you just save 1~2 days will eat, you can put the tofu into the bag tied tightly sealed, and then put it into the refrigerator freezer for preservation, so that the 2nd or 3rd day to eat will not be bad. This is the easiest way to preserve tofu.

3, cooked to preserve. You can put the tofu into the water and sprinkle a little salt, open the fire and cook for three minutes. This can kill the bacteria in the tofu, and at the same time will be cooked out of some water in the tofu, after cooking the tofu in a cool and ventilated place, can also be kept for a long time.