How to make soup from tiger shark skin?

Ingredients: tiger shark skin, a small amount of balsamic vinegar, and a proper amount of broth.

Exercise:

1. Soak in water 1 day, and then boil in clear water for 40 minutes.

2. Then pick up the skin and clean it.

3. Use a knife to remove the fishbone and fish attached to the fish skin and cut it into strips.

4. Add broth and stew in a saucepan, and add a small amount of balsamic vinegar until it is stewed.