Clean the pig's stomach.
Put in a pressure cooker and add water to cook. About 10 minutes.
Cut the sweet pepper into strips and cut the onion with garlic leaves.
Take out the cooked pig's belly and cut the slices diagonally.
Put the oil in the pan, fry the garlic, pour the sweet pepper and stir fry.
Add the belly and add soy sauce and vinegar.
Add the garlic leaf chopped green onion and stir fry.