1. In a saucepan, bring vinegars, sugar, salt, black pepper, chili or red pepper flakes and mustard seeds to a boil, stirring occasionally. 2. Stir in tomatoes, bell peppers and scallion greens. 3. Simmer uncovered for about 1½ hours, or until reduced to about three cups and thickened. 4. Stir occasionally, increasing the frequency of stirring during the last hour. ---------------------------------------------------------------------------
Nutrition
Ingredients
