Roasting your beets makes them sweeter and gets rid of that earthy flavor. If you don't like the taste of raw beets, feel free to use roasted ones instead. Preheat your oven to 390F (200C). Wash and peel your beets, then wrap each in aluminum foil, add them to a baking sheet, and bake for 40 minutes to 1 hour. Your roasted beets are ready when they're fork-tender. Let cool to room temperature before pickling.