INGREDIENTS
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1 3/4 cup granulated sugar
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2 cups all-purpose flour
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6 tablespoons dutch-processed cocoa
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1 1/2 teaspoons baking powder
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1/2 cup salted butter
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1 cup coca cola
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1/2 cup vegetable oil
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2 large eggs
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1/2 cup buttermilk
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1 teaspoon vanilla extract
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1/2 cup unsalted butter
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3 tablespoons unsweetened cocoa powder
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6 tablespoons milk
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1 teaspoon vanilla extract
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4 cups powdered sugar