INGREDIENTS
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2 cups unbleached all-purpose flour (or 1 c. all-purpose + 1 c. whole-wheat pastry flour*)
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1/2 tablespoon granulated sugar
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1 teaspoon sea salt
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1 1/2 sticks COLD unsalted butter (12 tablespoons), cut into slices
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1/2 beaten large egg, cold (save the other half to brush on top of the crust)
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1/4 cup ice-cold water
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1/2 tablespoon cold apple cider vinegar (I keep mine in the fridge)