1. After the crucian carp is washed, cross-cut it with a knife several times, pour the oil in the pot, and the oil is hot. Pour the oil on the fish with a spoon, so that the fish cut with a knife will be turned out.

2. Fry the whole piece in the oil pan, pay attention to turning it over, fry it on both sides until golden, take it out, cut the onion into sections, slice the ginger, and mix the raw flour with water.

3. Pour oil into the pot, add onion, ginger and tomato sauce, and then add water, oil, salt and sugar.

4. Pour in the stirred raw powder water and cook until it is sticky. Finally, pour the cooked sauce evenly on the crucian carp.