Step 1

To make the vinaigrette, carefully remove the skin from the pomegranate. Working over a sieve placed over a bowl to catch the juices, peel away the thick membrane from the pomegranate seeds and allow the loosened seeds to collect in the sieve. Measure 1/3 cup of the seeds and reserve for garnish. Press on the remaining seeds with the back of a spoon to release about 2 Tbs. juice. Discard the crushed seeds.

Step 2

Add the olive oil, vinegar, sugar, salt and pepper to the pomegranate juice. Whisk until blended.

Step 3

Using a small, sharp knife, cut a slice off the top and bottom of each orange to expose the flesh. Place each orange upright on a cutting board and thickly slice off the peel in strips, following the contour of the orange to expose the flesh. Holding the orange over a large bowl, cut along either side of each section, letting the section drop into the bowl. Add the arugula and red onion, separating the onion slices into rings. Drizzle the dressing over the salad, then toss to coat evenly.

Step 4

Divide the salad among individual plates, distributing the orange sections evenly. Garnish with the reserved pomegranate seeds. Serve immediately.