INGREDIENTS
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For the crust
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4-1/2 oz. (1 cup) unbleached all-purpose flour; more as needed
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1-1/3 oz. (1/3 cup) cake flour
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1 tsp. granulated sugar
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1/4 tsp. table salt
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4 oz. (1/2 cup) cold unsalted butter, cut into 8 pieces
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1/4 cup ice-cold water
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1 tsp. cider vinegar
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For the filling and topping
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4 large egg yolks
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1 14-oz. can sweetened condensed milk
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1/2 cup fresh Key lime juice (from 14 to 16 limes) or bottled Key lime juice (preferably Manhattan brand)
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1-1/2 cups cold heavy cream
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1 oz. (1/4 cup) confectioners’ sugar
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3/4 tsp. pure vanilla extract