INGREDIENTS
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Cooking spray
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3 1/2 cups all-purpose flour (sift, then measure), plus more for dusting
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2 cups hot strong coffee
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1 1/2 cups natural unsweetened cocoa powder (not Dutch process)
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2 teaspoons salt
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1 tablespoon baking soda
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1 tablespoon baking powder
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4 cups sugar
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4 large eggs
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1 cup vegetable oil
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4 teaspoons vanilla extract
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1 1/2 pounds bittersweet chocolate, chopped
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3 1/3 cups heavy cream
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4 ounces white chocolate, finely chopped
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4 ounces milk chocolate, finely chopped
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8 ounces bittersweet or semisweet chocolate, finely chopped