INGREDIENTS
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Cake:
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2 sticks (1 cup) unsalted butter, softened, plus more for the pan
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2 cups all-purpose flour
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3/4 cup unsweetened cocoa powder
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1 teaspoon baking soda
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1/2 teaspoon fine salt
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2 cups light brown sugar
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3 large eggs
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1/2 teaspoon vanilla
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1 1/4 cups dry red wine
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Buttercream:
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2 sticks (1 cup) unsalted butter, softened
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3 1/4 cups confectioners' sugar
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1 teaspoon vanilla
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About 2 tablespoons half-and-half or heavy cream