INGREDIENTS
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3 cups sugar
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3 cups all-purpose flour
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1 1/2 cups unsweetened cocoa powder, plus more for pans
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1 tablespoon baking soda
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1 1/2 teaspoons baking powder
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1 1/2 teaspoons salt
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1 1/2 cups buttermilk, room temperature
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3/4 cup vegetable oil
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3 large eggs
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1 1/2 teaspoons pure vanilla extract