1. Remove the viscera and gills of herring and clean them.

2. Cut the washed herring from the middle and put it on kitchen paper to absorb the water on the fish surface.

3. Put the cooking oil in the pot, and fry the fish, onion and ginger slices in the pot.

4. When the surface of the fish is golden yellow, take it out and put it in a bowl to control the oil.

5. After the fish is fried, pour out the remaining oil in the pot and add tomato sauce, seafood soy sauce, cooking wine, salt and water.

6. Simmer the soup until it is even.

7. Cook the fish and the cooked soup in a pressure cooker.

8, can be eaten after cooling.