Duchess Potato Casserole

Name: Duchess Potato Casserole
Yield: Serves 8 to 10
Ingredients: 3 1/2 pounds, Yukon Gold potatoes, peeled and sliced 1/2 inch thick; 2/3 cup, half-and-half; 1 , large egg, separated, plus 2 large yolks; , Salt and pepper; Pinch, nutmeg; 10 tablespoons, unsalted butter, melted

Side Dishes
Potatoes
Make Ahead
Casseroles

By Lan Lam ･ Appears in Cook's Illustrated November/December 2017, America's Test Kitchen TV

For potatoes that are elegant yet easy, we revamp a fussy French classic.

SERVES 8 to 10

TIME 1½ hours, plus 20 minutes cooling

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