That’s the question Food & Wine editors asked Wisconsin’s best chefs and shopkeepers, including Patrick DePula (Salvatore’s Tomato Pies), Ken Monteleone (Fromagination), Tim Mulcahy (Brennan’s Cellars), and Tory Miller (L’Etoile, Graze). Here are their picks, how to use them, and where to buy online (alphabetical by dairy).