INGREDIENTS
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1/2 cup unsalted butter, at room temperature
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1 cup sugar
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1 teaspoon distilled white vinegar
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1 large egg
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1 teaspoon vanilla extract
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1 1/2 teaspoons red food coloring
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1 1/2 cups all purpose flour
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2 1/2 Tablespoons cocoa
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1 teaspoon cornstarch
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3/4 teaspoon baking powder
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1/4 teaspoon salt
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3/4 cup white chocolate chips