Totoro birthday cake

~ ingredients 6 egg whites 180g sugar A pinch of salt 6 yolks 180g cake flour 44g vegetable oil 30g milk 2g vanilla extract Bake at 320°F 40MIN. I use 1 of 15cm mold and 1 of 12cm mold. ~ Swiss meringue butter cream 140g egg whites ( 4 eggs) 220g sugar A pinch of salt 450g unsalted butter 2~3g vanilla extract