1. Pork ribs fly water.
2. Steam the kelp in a steamer for half an hour.
3. Take it out and clean it with running water.
4. Cut into small pieces.
5. Put the pork ribs over the water in the pot, add some water, add a little cooking wine, ginger, green onion knot and bring to a boil.
6. Transfer to a casserole, simmer for 1 hour, then add kelp, and simmer for about half an hour to season.