1. The boiled pigskin is soft and frozen, which is mainly caused by the high water content in the skin jelly, so it can be boiled again. The main ingredients in the jelly are water and collagen. When the water and collagen are boiled to a suitable ratio, the jelly is cooked.

2. Pigskin jelly is a kind of Han nationality special food boiled with pigskin, which belongs to cold dishes. Put the pigskin except hair into proper seasoning, and cook it for a long time, so that the boiled soup contains a certain amount of hide glue, and then cool it. After cooling, the pigskin and soup will solidify together and be eaten with seasoning.

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