Potato, Celery Root and Smoked Trout Hash

Inspired by Swedish pyttipanna, or hash made with leftover meat and potatoes, we devised this one-skillet meal loaded with earthiness from root vegetables, savoriness from smoked trout and freshness from tender green herbs. To jump-start the cooking process, we microwave diced potatoes until tender, then they join onion and celery root that have been lightly browned in butter. Another 10 minutes gets the potatoes nicely browned, then fiery horseradish and flaked smoked trout are folded in. Serve the hash topped with a fried or poached runny-yolked egg, or offer some lingonberry preserves alongside.