Fluffy Sponge Cake - cooking recipe

Ingredients

10 eggs, separated
2 cups sugar
1 3/4 cups flour
1/4 cup cornflour
1/2 teaspoon salt
2 teaspoons baking powder
3 tablespoons oil
4 teaspoons orange juice
4 teaspoons orange zest

Preparation

Preheat the oven to 350\u00b0C.
Grease a large pan or two smaller ones and line with waxed paper. Grease the paper and coat with a corn flour and sugar mixture.
Whisk egg yolks, adding half the sugar gradually until light coloured and creamy.
Add oil, orange juice and orange zest and beat again.
Whisk egg whites until very light and forms soft peaks.
Add the other half of sugar gradually beating on medium to high speed.
Add corn flour, flour, salt and baking powder gradually to the egg yolks, beating all the while.
Gently fold in the egg whites with a rubber spatula until well mixed.
Spoon the mixture into the pan and bake for 35- 45 minutes until brown.
A toothpick inserted into the center should be clean and the midlle should spring back when touched.