1, tofu tends to be sticky after a long time, which affects the taste. As long as the tofu is cooked in salt water, cooled, put in a fresh-keeping box with water and then put in a refrigerator, it can be kept for at least a week without deterioration;

2. Fresh tofu can be refrigerated. Once the vacuum-packed tofu is opened, it must be preserved. You can put it in water and then put it in the sealed box of the refrigerator. If you change the water once every two days, you can keep it for a week;

3. Frozen tofu is more elastic and yellow. Before cooking, it should be thawed in the refrigerator, and its texture should be changed as little as possible to prevent the growth of bacteria.