Truffled Potato Gratin
Fresh black truffles are worth the splurge. They are available at some specialty foods stores and from Urbani Truffles (215-699-8780; urbanitruffles.com). Black truffles in jars are sold at specialty foods stores and Italian markets; the most flavorful are European winter black truffles.IngredientsMakes 10 servings4 cups whipping cream, divided2 tablespoons chopped fresh thyme15 whole black peppercorns5…