In a large skillet bring 1 inch of water to boiling. Add fresh sweet potatoes; reduce heat. Cover and simmer for 20 minutes or until tender. Drain well. Or, drain canned sweet potatoes and cut into 2-inch pieces; set aside.
For sauce, in a small bowl combine orange peel, orange juice, molasses or brown sugar, salt, cinnamon, and allspice. Pour over potatoes in skillet.
Cook and stir gently until bubbly. Simmer, uncovered, for 5 minutes or until potatoes are glazed, spooning sauce over potatoes occasionally. Makes 4 servings.