Add oil to the pot.

2.

Fry the fish on both sides in the oil pan, and then cook with proper amount of vinegar.

3.

Then add onion, ginger and garlic.

4.

Then add pepper powder, sugar, salt, soy sauce, cooking wine and appropriate amount of water.

5.

After the fire boils, simmer for about 20 minutes.

6.

Just turn off the fire and cook with monosodium glutamate.