INGREDIENTS
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4 large egg yolks
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1/2 cup/100 grams granulated sugar , divided
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3/4 cup heavy cream
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1 cup/227 grams mascarpone (8 ounces)
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1 3/4 cups good espresso or very strong coffee
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2 tablespoons rum or cognac
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2 tablespoons unsweetened cocoa powder
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About 24 ladyfingers (from one 7-ounce/200-gram package)
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1 to 2 ounces bittersweet chocolate , for shaving (optional)