Make Ahead Tip: Add all ingredients except the reserved oregano-onion mixture, cabbage and lime wedges. Cover and refrigerate for up to 3 days or freeze for up to 3 months. Reheat and garnish before serving.
Note: Hominy is white or yellow corn that has been treated with lime to remove the tough hull and germ. Dried, ground hominy is the main ingredient in grits. Canned, cooked hominy can be found in the Latin section of large supermarkets--near the beans--or at Latin markets.