INGREDIENTS
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Unsalted butter, for pans 2 1/2 cups cake flour (not self-rising), plus more for pans
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1/4 cup unsweetened cocoa powder
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1 teaspoon salt
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1 1/2 cups sugar
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1 1/2 cups canola or safflower oil
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2 large eggs
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1 tablespoon red food coloring
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1 teaspoon vanilla extract
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1 cup buttermilk
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1 1/2 teaspoons baking soda
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2 teaspoons white vinegar
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1 pound (two 8-ounce bars) cream cheese, room temperature
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2 teaspoons vanilla extract
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1 cup (2 sticks) unsalted butter, room temperature
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2 pounds confectioners' sugar, sifted