Beat egg whites with an electric beater until soft peaks form. Gradually add sugar and continue beating until stiff, but not dry peaks form. Using same beaters, beat 1/3 of the egg whites with oil until light, about 5 minutes. Add milk, continue beating. Gradually add dry ingredients. Batter will be thick. Fold in remaining egg  whites in two batches. Pour batter into prepared waffle iron and cook according to manufacturer's instructions.

You can also use the batter to make pancakes, cook them on a hot griddle.

Courtesy of FabulousFoods.com