Add egg yolk mixture all at once to the dry mixture. Stir just till moistened (should be lumpy).
In a small bowl beat egg whites until stiff peaks form (tips stand straight up).
Gently fold egg whites into flour and egg yolk mixture, leaving a few fluffs of egg white, Do not overmix.
Spoon waffle batter into your waffle iron, making sure not to overfill it.