INGREDIENTS
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1 stick cold unsalted butter, cut into pieces, plus more for the pie plate
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3 cups all-purpose flour, plus more for dusting
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2 tablespoons sugar
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1 teaspoon kosher salt
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1/2 cup cold shortening, cubed
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For the filling
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6 cups blueberries
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1 cup sugar
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1 cup blueberry jam
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3 tablespoons all-purpose flour, sifted
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Grated zest and juice of 1 lemon
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Pinch of kosher salt
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2 tablespoons unsalted butter, diced
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1/2 cup sugar
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Juice of 1 orange (about 1/4 cup)