Eureka! I think this is the dressing that the cafeteria at Grove City College served alongside a mixture of peaches and blueberries. I couldn't get enough of it -- but I am quite depressed to discover that it contains that evil of evils, Miracle Whip.
I used only the finest organically-grown oranges for the zest. I added some powdered orange cheese for extra flavor and a nice color, but I think next time I will use Cheez Whiz for a smoother texture. Perhaps then it will hold the bricks together better. ;)