4 slabs pork back ribs, about 6 pounds 2 tablespoons cornstarch 2 tablespoons brown sugar 1 tablespoon minced fresh mint 1/2 teaspoon salt 2 cups orange juice 2 tablespoons lime juice 1 teaspoon grated lime peel 1 teaspoon grated lemon peel
Combine cornstarch, brown sugar, mint and salt in medium saucepan; gradually stir in orange and lime juice. Cook, stirring, until thickened, about 5 to 6 minutes. Remove from heat; stir in lime and lemon peel; set aside.
Heat oven to 250 degrees F.
Lay ribs on two large shallow pans; salt and pepper to taste. Roast for 3 hours, until tender.
Prepare medium-hot fire in grill.
Brush ribs with sauce.
Grill ribs directly over fire, turning frequently and brushing generously with sauce, until ribs are well glazed, about 10 minutes.