INGREDIENTS
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cake
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3 ounces unsweetened chocolate, chopped
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2 1/4 cups all purpose flour
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2 teaspoons baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon salt
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14 tablespoons (1 3/4 sticks) salted butter, room temperature
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1 1/4 cups plus 3 tablespoons sugar
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3 large eggs, separated
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3/4 cup chocolate stout, regular stout, or porter
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2/3 cup freshly brewed strong coffee
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frosting
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1 pound bittersweet chocolate (54% to 60% cacao), chopped
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2 cups heavy whipping cream
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1 teaspoon instant espresso powder