INGREDIENTS
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◦2 sticks (8 ounces; 230 grams) unsalted butter, at room temperature
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◦2/3 cup (70 grams) confectioners sugar, sifted
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◦2 large egg yolks, at room temperature
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◦Pinch of salt
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◦2 teaspoons pure vanilla extract
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◦Grated zest of 1 to 1 1/2 lemons (to taste)
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◦2 cups (280 grams) all-purpose flour
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◦Approximately 1/2 cup (100 grams) sugar, for coating