How to make the world's softest sponge cake( Taiwanese Castella Cake Recipe)

Hello. I made a really soft and moist sponge cake and I want to share this cake recipe. This cake is not too sweet and soft, so it is very suitable for children's snacks. If you have any questions, please leave a comment. Ingredient Cake flour 80g oil 50g milk 80g 5 egg Sugar 80g Vanilla extract 1ts