The first type: direct freezing. Practice: Generally, there are more old tofu used to make frozen tofu. This kind of tofu has less water and is harder. It is made into frozen tofu that is unbreakable. Cut the old tofu into pieces with the same size, and you can cut them into larger pieces. Wrap them in fresh-keeping bags one by one and put them directly into the freezer of the refrigerator. Generally, it can be frozen into frozen tofu overnight in 10 hour, and cut them with cold water bubbles when eating.

The second method: steam before freezing. This kind of frozen hair also needs old tofu, because tofu has a beany smell. Many people don't like the smell. Some people cut tofu into cubes in advance, put it in a steamer, boil it and steam it for 5 minutes. In this way, the beany smell can be removed. After cooling, it is divided into small pieces, packed in fresh-keeping bags and directly frozen into frozen tofu.

The third method: soaking in light salt water. Method: First, cut the old tofu into small pieces of the same size, add water to a large basin, add a little salt and stir well. After the salt melts, add tofu slices and soak for about 15 minutes. In this way, the smell of beans can be quickly removed. Then, put it in a fresh-keeping bag and put it in the refrigerator 10 for more than 0 hours. This kind of frozen tofu tastes better.

The fourth method: fresh tofu/dried beancurd preservation method: if you buy tofu or dried beancurd with a packaging box, you can put it in the refrigerator directly with the packaging box. If you buy bulk board tofu or dried beancurd, first soak it in filtered water or cold boiled water (the water should be flooded with tofu or dried beancurd! ) sealed in a fresh-keeping box, placed in the refrigerator for refrigeration, and changed water once a day, which can be kept for one week; But try to use it up within 3-5 days, so as not to lose the aroma of tofu/dried tofu. Preparation and preservation of frozen tofu: soak the plate tofu in filtered water or cold boiled water for about 20-30 minutes (remove preservatives and other additives from tofu! ）。 Take it out, drain it, cut it into appropriate sizes, spread it on a plate, wrap it in a plastic bag and put it in the freezer until the next day. Take out the plate the next day, pull up the frozen tofu, wrap it in a plastic bag, and put it back in the freezer for about 2-3 months.