Buche de Noel (Yule Log)
Ingredients:
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2 teaspoons butter
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⅓ cup all-purpose flour, sifted
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⅓ cup unsweetened cocoa powder
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¼ teaspoon fine salt
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4 eggs, separated
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¾ cup confectioners' sugar, divided
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1 teaspoon vanilla extract
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1 cup heavy whipping cream
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3 tablespoons confectioners' sugar
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1 tablespoon sour cream
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½ cup heavy whipping cream
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8 ounces dark chocolate chips