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

Hello This time, I made a soft sponge cake green tea version. Green tea has a pleasant aroma and a bitter taste, so it goes well with sweet cakes The process is simple, so make sure to make it. ※This cake does not use a baking powder, it just swells with the foam of the egg. Ingredient(1cup=240ml) 6 egg flour 3/4cup(90g) Green Tea Powder 1Table spoon+ 1 teaspoon(10g) Vegetable oil 75ml(60g) milk 100ml Sugar 1/2cup+2Table spoon(120g)