Chocolate Waffles

Heat waffle iron. In a large bowl, sift together the flour, cocoa powder, baking powder, baking soda, salt, and sugar. Place chocolate and butter in a heatproof bowl set over a saucepan of barely simmering water. Stir until melted; combine well. Remove from heat; whisk in the egg yolks, cream, and vanilla. Pour over the dry ingredients; stir briefly until just combined.

In a medium bowl, beat egg whites until stiff but not dry. Fold into the batter.

Ladle about 1/3 cup batter onto each section of the waffle grid; spread batter almost to the edges. Close lid; bake 3 1/2 to 4 minutes at the waffle iron's lowest setting, until no steam emerges from the iron.

Transfer the cooked waffles to a baking sheet; place in an oven set to low heat, about 200 degrees, while using the remaining batter. Serve warm.