Instructions: Melt chocolates in top of double boiler over simmering water.

Grease, then preheat waffle iron to medium-high, or according to manufacturers instructions. In large bowl, combine flours, sugar, baking powder and salt. In another bowl, beat egg yolks, milk, vanilla and melted butter with a whisk until foamy.

With an electric mixer, in a separate bowl, beat egg whites until soft peaks form. Make a well in center of flour mixture and pour milk mixture into well, stirring just until moistened. With large spatula, fold in whites until no streaks are visible.

Add melted chocolate and swirl through batter. For each waffle, pour about 1 cup batter onto grid. Close lid and bake until waffle is crisp and well-browned, about 4 to 5 minutes. Remove from iron with fork to protect your fingers. Serve immediately.

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