Potato and Turnip Gratin Recipe | Epicurious

Ingredients

• 4 cups heavy whipping cream
• 2 cups low-salt chicken broth
• 6 large fresh thyme sprigs
• 4 large fresh sage sprigs
• 2 large fresh rosemary sprigs
• 2 large garlic cloves, pressed
• 1 Turkish bay leaf
• 1 tablespoon coarse kosher salt
• 1 teaspoon ground black pepper
• 1/4 teaspoon ground nutmeg
• 1/4 teaspoon cayenne pepper
• 3 1/2 pounds russet potatoes
• 2 pounds turnips
• 1 cup freshly grated Parmesan cheese