Mona Johnson, co-owner of Tournant catering in Portland, Oregon, created this dish for a Thanksgiving dinner. She cooked mild white Japanese turnips (Tokyo or Hakurei varieties) in white miso and butter for savory richness, and added a touch of maple syrup for sweetness. If you can't find Japanese turnips, use a combination of small radishes and mustard greens--regular turnips are too strong for this delicate dish.