If you can’t buy already pre-sectioned oranges, you can section whole oranges on your own in just a couple of easy steps. Using a sharp knife, peel the oranges, being careful to remove all the white pith. The pith is the white stuff between the peel and the orange. Pith is very bitter, so it’s important to remove it, so you don’t have that bitter taste in your salad. Over a small bowl, with a paring knife, cut in between the membranes to release the sections. Set the sections aside.