I will regret not staying in Beijing.

The best answer is that you should choose fish first, and there are many kinds, but the best choice issardines,don't useskate.
Main ingredients: sardines,tomato sauce, (the sardines bought from the store are already processed, just wash them slightly at home. The amount of tomato sauce depends on how many fish you're making and how much you like this flavor; generally, 5-6 fish require one box of tomato sauce)
Seasonings:gingergarlic, star anise or thirteen spice,chicken essencea little sugar.
Pressure cooker
Method: Wash the fish and cut the scallions, ginger, and garlic into diamond shapes (you can cut them however you like, just make sure they are slightly thick). Heat the oil to frying temperature, then add 1. 2. 3. after 20 seconds, turn off the heat, and then add 4..
Then remove the scallions, ginger, and garlic from the pot, and heat the oil until it is very hot. Be sure to take safety measures, such as wearing sleeves and an apron, then fry the fish according to the size of your pan and the amount of oil used; if there are too many, do it in two stages, frying twice until the fish is crispy on the outside and tender on the inside when touched by hand.Then place the fried fish aside. Clean the pot, add a small amount of oil, and add the prepared tomato sauce, stirring well. Add a little salt, chicken essence, and lots of sugar and vinegar in proportion. Add very little water at the end, then place the fried fish back into the pressure cooker; the longer it cooks, the better it tastes!However, make sure not to burn it!Under the condition that you don't burn the pan!！！