1. Dry (or dry) the cleaned fish and cut it into 5 mm wide fish pieces.
2. fry the fish pieces in the oil soaked in ginger until they are slightly yellow.
3. Pour off the excess oil, add onion and stir-fry ginger slices, add fried grouper, add appropriate amount of soy sauce, cooking wine, sugar, salt and soup, and then cook the fish without fire.
4. Simmer for 40 minutes on low heat, and take out the pot after the fish soup dries.