Chocolate Raspberry Roulade

Have ready meringue and cake roll. In a small bowl stir together yogurt, vanilla, and 1 tablespoon sugar. In a large bowl with a whisk or an electric mixer beat cream and 2 teaspoons sugar until cream just holds stiff peaks. Crumble meringue into 1/2-inch pieces and gently fold into whipped cream. Reserve 1/2 cup raspberries and add remaining berries and yogurt mixture to whipped cream mixture. Gently fold mixture until just combined. Unroll cake roll on kitchen towel and brush inside with Chambord. Gently spoon whipped cream mixture lengthwise along center of cake and roll cake around filling so that long edges just come together. Place roulade, seam side down, on a platter and chill 1 hour to facilitate slicing. Just before serving, sprinkle roulade with remaining 2 teaspoons sugar. Cut roulade into slices (each a little less than 1 1/2 inches thick) serve with some reserved berries.