Est. 1941. www.spiceislands.com. We use only the thin outer layer of tree-ripened oranges to make Spice Islands orange peel. Orange peel can be used as a substitute wherever fresh peel is desired. Add orange peel to cake, muffin, waffle, pancake, Fresh toast and quick bread batters. Stir into warmed syrups and marinades for a bright, lively flavor.