Preheat waffle iron.

In a large bowl whisk together flour, cocoa, baking powder and salt.

In a separate bowl combine milk, egg yolks, and oil.

Add milk mixture to flour, and stir until combined.

In another bowl whisk egg white until you have soft peaks, about 3 minutes at medium speed. Fold egg whites into the batter. Finally, add in the chocolate chips.

Spray waffle iron with non-stick spray. Pour in batter and cook until the light goes off, or about 4 minutes.

Serve with whipped cream, berries, or syrup.