Carefully hold the orange in one hand and a paring knife in the other. Cut into the rind and remove a strip of the rind and just a bit of the pith (or white part) as you move the knife around the equator of the orange. Repeat above and below your first slice to make more twists. Roll the strip into a spiral and drop it into the drink before serving. If you're daring, you can carefully burn your orange peel to express the natural oils and add a smoky undertone to the cocktail.