INGREDIENTS
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1 3/4 cups all-purpose flour
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2/3 cup confectioners' sugar
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1/4 cup cornstarch
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1/2 teaspoon salt
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12 tablespoons (1 1/2 sticks) unsalted butter, at room temperature
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1 large egg yolk
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1/2 cup all-purpose flour
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2 1/4 cups sugar
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Zest of 1 lemon
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1 cup fresh lemon juice (from 5 or 6 lemons)
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6 large eggs plus 1 large yolk
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1/8 teaspoon salt