INGREDIENTS
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9 tablespoons unsweetened cocoa powder
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1½ cups cake flour (not self-rising)
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½ teaspoon salt
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1 teaspoon baking soda
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¼ teaspoon baking powder
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4 ounces (1 stick) unsalted butter, at room temperature
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1½ cups granulated sugar
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2 large eggs, at room temperature
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½ cup strong coffee (or water)
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½ cup whole or low-fat milk
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For the ganache frosting:
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10 ounces bittersweet or semisweet chocolate, coarsely chopped
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½ cup water (or cream)
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¾ cup (1½ sticks) unsalted butter