1, if it needs to be preserved for a long time, you can wash the pig bones, change knives and cut into pieces, add a little Shaoxing wine and mix well, wrap them in plastic wrap and put them in the refrigerator for freezing.

2. When in use, the pig bones can be taken out according to the requirements of the recipe, and can be taken out of the pot after being naturally thawed, thus ensuring the freshness of the pig bones.