1 First, soak the shark's fin in cold water for about two hours, then cut off the excess fins, and then boil the water in a large pot.

2. Then put the shark's fin just soaked in a big pot and continue to cook for about four hours, then pick it up with a sieve and put it in a flat place, then rinse it with cold water, sprinkle shark's fin and wash off the excess shark's fin, but put it under the tap and rinse it with clean water for about 30 minutes, then cook it in boiling water for about two hours until it becomes soft, then pick it up and rinse it off.

3. At the same time, remove the spun yarn from the fishbone, then boil the water in a pot, add the shark fin, roll it twice, add a little ginger wine, and turn off the heat after the shark fin is rolled again. It's still troublesome to find shark fin soaked in water, so we must handle it carefully.