Mix flour and oil to prevent gluten to form

Mix in egg yolks only and milk then mix. Batter will be yellow runny

Whisk egg white and add sugar slowly. Sugar will dissolve to form a layer wrapping the bubble to protect it from collapsing. Again until medium peak stage - tip is curved but bottom is straight.

Add whisked egg white to flour mix in 3 batches and mix evenly

Add into a 7-inch round pan. Drop it gently a few times on the table to even out the mixture spread

Cover with aluminum foil - make a whole in the middle to fit the foil. Pre hear the oven 165’C and bake for 20 mins

After 20 mins remove foil and reduce temperature to 155 - bake for another 20 mins.

Cool it upside down. Separate from pan