The orange is the citrus fruit of winter, and Sicilian oranges are famous worldwide, starting with the blood oranges of Etna.
In these recipes you'll find it mostly in savoury dishes: in segments in a salad with fennel and olives, as in Sicilian tradition, sliced in sandwiches, supremed in barley risotto. To supreme it, cut away the peel and white pith with a knife, then cut out the segments without their membranes.