POTATO AND TURNIP GRATIN

Potato and Turnip Gratin image

Provided by Bruce Aidells

Yield Makes 12 servings

Number Of Ingredients 14

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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

Steps:

Position rack in top third of oven and preheat to 350°F. Bring first 11 ingredients to boil in large saucepan. Reduce heat and simmer until mixture is reduced to 33/4 cups, about 35 minutes. Strain cream mixture into large bowl.
Peel potatoes; cut into 1/8-inch-thick rounds, adding immediately to cream mixture to prevent discoloration. Peel turnips; cut into 1/8-inch-thick rounds. Add to potato mixture; stir to coat.
Pour vegetable mixture into 15x10x2-inch glass baking dish and press to even layer. Cover dish with foil. Bake 1 hour. Uncover; sprinkle with cheese. Bake until top is golden brown, potatoes are tender, and most of cream mixture is absorbed, about 25 minutes longer.