Sumo Citrus. Have you heard of it? I hadn’t until I walked into Whole Foods a couple of weeks ago and was greeted with a beautiful display of these uniquely-shaped and brightly-colored fruit with a thick, dimpled peel and distinctive “top knot”. These large mandarin oranges are seedless, easy to peel, and very sweet. They’re juicy, but not so much that the juice drips down your arm when you peel them like some oranges can do.