Preheat oven to 400°F. Place ribs in a large shallow baking pan. Add 1-inch of water to pan and cover tightly with foil; bake for 1 hour. Meanwhile, combine remaining ingredients except cilantro in a medium saucepan. Bring to a boil; reduce heat and simmer for 15 minutes. Let cool slightly then puree in a blender or food processor. Remove foil from ribs and drain water. Bake, uncovered for 30 minutes, basting liberally with sauce several times. Serve ribs with extra sauce, and sprinkle with cilantro, if desired. Makes 6 servings.