INGREDIENTS
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3 cups cake flour
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1 tablespoon baking powder
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3/4 teaspoon salt
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6 tablespoons butter, softened
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1 tablespoon vanilla extract
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1 teaspoon vanilla bean paste {optional}
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2 cups sugar
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1/2 cup vegetable oil
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3 eggs + 4 egg yolks
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1 cup buttermilk