If you haven't tried satsuma oranges (fresh Mandarin oranges), you are in for a real treat. You can often find them in the supermarket during the holidays.
Whisk together first 5 ingredients until well blended.
Toss together mixed salad greens, onion, and satsuma segments. Drizzle with vinaigrette.
*1 large navel orange may be substituted.
Find recipes with ingredients that you have on hand.