INGREDIENTS
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For the Cake:
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2½ cups + 2 tablespoons all-purpose flour, divided
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2 teaspoons baking powder
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1 teaspoon salt
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1¾ cup granulated sugar
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Zest of 1 lemon
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1 cup unsalted butter, at room temperature
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3 eggs, at room temperature
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½ teaspoon vanilla extract
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3/4 cups buttermilk
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1 Tbs unsalted butter, very soft