Preheat your waffle iron.
Add all dry ingredients in a large bowl and whisk to combine. In a separate container, incorporate the yolks into the milk, add this and the oil to the dry ingredients and stir to combine completely. Using a clean bowl and utensils/beaters, whip egg whites into stiff peaks. Add cream of tarter and beat to combine. Add egg whites to the batter and whisk until smooth.
Scoop the batter onto the preheated waffle iron just avoiding the edges. Follow the manufacturer’s directions for time for your appliance.
Top with whipped creams, syrups, nuts, or fruit, and serve.