Whip egg yolks with oil and milk powder and water. Add in flour and cornflour with baking powder and soda. Mix well.

Meanwhile, whip egg whites with remaining sugar until medium peaks. Add whites into egg yolk mixtures and fold.

Heat up waffle pan on the stove. Add 2 ladles of batter. Flip the pan to make sure that the batter also falls on the other side of the pan. Cook for 2 minutes on each side. Finish in the oven for extra crunch.