INGREDIENTS
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Ingredients:
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2 large sweet potatoes, baked and cooled
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1 cup sour cream
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1 cup granulated sugar
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3 large eggs, separated
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2 tablespoons unsalted butter, melted
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2 tablespoons bourbon
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1 teaspoon vanilla
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1/2 teaspoon ground ginger
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1/4 teaspoon ground nutmeg
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1/4 teaspoon salt
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All-purpose flour for dusting
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1 Basic Flaky Single Piecrust, chilled, or
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1/2 of a 15-ounce package rolled refrigerated unbaked piecrusts (1 crust)
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1/4 teaspoon cream of tartar
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1/2 cup superfine sugar