Joe Yonan's Citrus-Pickled Onions Recipe

Remember when a friend at work gave me a bunch of large onions and I made onion jam? Well, Danielle did it again: last Friday she brought me a bag of red onions and beets. I wasn't complaining :) Although the beets are still sitting in my kitchen, I knew right away what I would do with the red onions: Citrus-Pickled Onions from Joe Yonan's Serve Yourself cookbook. This is the second recipe