1. Cut both sides of perch vertically and slice ginger.
2. Onion is divided into three sections.
3. Add shallots and ginger slices to the fish belly and cook for 10 minutes.
4. Pour in the steamed fish oil, continue to cook for 2 minutes, take out the pan and put it on the plate.
5. Sprinkle chopped green onion and pour in boiling oil.