1. Clean the mackerel, add cooking wine, salt, green onions and ginger slices and marinate for about 20 minutes.

2. Prepare onions, ginger, star anise, cinnamon and bay leaves. Mix oyster sauce, soy sauce, sugar and vinegar to make a sauce.

3. Add cooking oil to heat, absorb the water from the fish, fry until golden brown and take it out. Heat the oil and add the onions and ginger. Add sauce. Pour in the fried fish and add water. Close the pot.