Need

Buy boxed tough tofu in the supermarket and cut the tough tofu into evenly sized pieces.

2． Put the cut tofu in a pot of cold water and add 1/2 teaspoon of salt (about 3 grams). After the water boils, continue to cook for 1 minute and take out the tofu.

3． Put the pulled out tofu into cold water, cool it thoroughly, take it out and drain it, and put it into a fresh-keeping bag piece by piece.

4． Finally, seal the plastic bag and put the tofu in the freezer of the refrigerator to freeze.

If it is water tofu,

freeze the water tofu to get frozen tofu. Frozen tofu that is thawed and dehydrated is also called sponge tofu, so it is not necessary.