Mosaic of Beets & Radishes with Horseradish Dressing

From the extravagant to the simple; you’ll need a mandoline for this, or a steady hand and a sharp knife. The slimmer the slices, the prettier this plate can be. If you can find multicolored radishes in white, pink, red, purple, and black, all the better. Radishes were originally black, then bred to be red; same with carrots, which were originally purple and then bred to be orange—something to do with the royal family in the Netherlands.