In a large mixing bowl, combine the flour, baking powder, sugar, and salt. Make a well in the center of the mixture.

In a small bowl combine the milk, oil and egg yolks. Beat to break up the yolks and combine

Pour the liquid ingredients into the center of the dry ingredients. Stir just until moistened- the batter will still be lumpy.

In another bowl, beat the egg whites until they have stiff peaks.

Add about / of the stiff egg whites to the waffle batter and stir in to combine and lighten the batter. Add the remaining egg whites and gently fold until no white streaks appear.

Heat waffle maker to high.

Cook the waffles according to the directions on your waffle maker.