Ingredients:
1/2 cup rice vinegar or white vinegar
1/2 cup ketchup
1/2 cup brown sugar
1/4 cup soy sauce
1 tablespoon cornstarch
1/4 cup water
1 small pineapple, diced (or 1 cup canned pineapple chunks, drained)
1 small bell pepper, diced
1/2 small onion, diced
