Quarter the peppers and seed them. Place on a baking sheet skin side up and put under the broiler until the skins have blackened. Remove to paper bags to cool, then peel off the skins. Slice the peppers into strips.
In a saucepan, bring the vinegar and corn oil to a simmer. Add the garlic and herbs. Simmer 5 minutes, stir in the pepper strips, and simmer 15 minutes longer, stirring occa