"This classic French sponge cake is a dense cake that is delicious dusted with confectioners' sugar and served with lightly sweetened whipped cream or a fruit coulis. Cut it into 10 generous pieces...."
INGREDIENTS
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1/2 cup white sugar
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10 (1 ounce) squares semi-sweet chocolate
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3/4 cup unsalted butter, cubed
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2 teaspoons vanilla extract
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5 eggs, separated
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1/4 cup sifted all-purpose flour
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1 dash cream of tartar
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salt to taste
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confectioners' sugar, for dusting (optional)