1
Adjust rack to middle position and preheat oven to 400 degrees. Wash and dry all produce. Halve, peel, and mince shallot. Remove and discard any stems and large ribs from kale. Cut potatoes into ¾-inch-thick wedges. Transfer peppercorns to a zip-close bag. Using a heavy pan or mallet, pound peppercorns until coarsely ground.