Ingredients A:
100ml Orange Juice
1pc Orange (to grate the Orange Skin) 
225g Self Raising Flour
100ml Corn Oil
70ml Water
150g Sugar (or reduce a little)
6 Egg York (A size)
1/2 tsp Orange Essence
1/2 tsp Orange Color
Ingredient B: 
6 Egg White
120g Castor Sugar
1tsp Tartar Cream
Recipe by Teresa
My advice:
To do this cake, it is better to mix the Ingredient B before Ingredient A. 
Mix Ingredient B until it stays in the bowl even if its upside down then 
slowly add into the mixed Ingredient A to make it fluffy.
Good luck.