To supreme oranges, begin by slicing off the top and bottom (the North and South poles, if you will) flesh. Now place the orange on your work surface so that it's sitting securely on its flat South Pole. Starting at the top, follow the curve and cut away the peel and white pith in wide strips. Now, cradle the peeled orange in your hand and, working over a bowl, slice between the membranes of the orange sections to release them, let the sections and juice fall into the bowl.