For the cake: grease and line two of the round pans, set aside. In a bowl, whisk together cake flour, canola oil, water, egg yolks, salt, sugar, baking powder until smooth. In another bowl, whisk egg whites until if forms stiff peaks, fold whipped eggwhites into cake batter. Divide among the prepared pans. Bake in the preheated oven for 20-25 minutes or until cooked. Let it cool completely.