For the oil cake, whisk the yolks, oil, water and powdered sugar until very fluffy.
Mix the baking powder with the flour and fold into the mixture alternately with the beaten egg white.
Bake the oil cake at 180 degrees for 60 minutes.
For the oil cake, whisk the yolks, oil, water and powdered sugar until very fluffy.
Mix the baking powder with the flour and fold into the mixture alternately with the beaten egg white.
Bake the oil cake at 180 degrees for 60 minutes.