Cut the bell peppers in half and remove the seeds and stems.

Stuff the leftover gyoza filling into the peppers.

Dust the entire surface with flour.

Heat a frying pan and add vegetable oil. Once hot, place the peppers meat-side down to cook. Once browned, flip and cook the pepper side.

Pour all the ★ ingredients into the pan at once. Cover with a lid and cook on medium-low heat for a while.

Remove the lid and simmer until the liquid is reduced, then it's ready to serve.