I really liked this recipe, although my husband hated it (what does he know)! It makes a really nice thick sauce, good over rice too. Next time I might reduce the amount of vinegar to 1/4 cup (my own personal taste), and cook the green peppers the same amount of time as the onions, as they were a little too crispy for me. This was really satisfying and filling though, a good way to use up leftovers.
This is a really good dish that I have made several times in the past year. The sauce is quite tasty.