Say a specific production method:
If there is too much water, it will melt. You must put it into the pot with cold water, and add enough water at a time according to the proportion of the skin. Generally, the water is twice that of the skin, and you can't add water at any time. Bring it to a boil with a big fire and simmer it slowly with a small fire for a long time. Make the pork skin soup more viscous. When it is cooked, stir it evenly when it is ready to cool. After it is cooled, put it in the refrigerator for refrigeration, and it will never melt. Don't put any additives, it's no good.