INGREDIENTS
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crust
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1 cup all-purpose flour
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1 1/2 teaspoons sugar
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1/2 teaspoon table salt
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1 stick cold unsalted butter, cut into 1/2-inch cubes
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2 tablespoons ice water
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filling
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1 1/2 cups sugar
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1 tablespoon all-purpose flour
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2 teaspoons freshly grated nutmeg
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1/2 teaspoon kosher salt
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3 large eggs, at room temperature
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5 tablespoons unsalted butter, melted and cooled
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1 cup buttermilk, at room temperature
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1 tablespoon dark rum
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1 teaspoon pure vanilla extract