Clear water cake (sponge cake)

Ingredients

• (A)
• 3 egg yolks
• 1 whole egg
• 50g corn oil
• (B)
• 50g low protein flour (cake flour)
• (C)
• 3 egg whites
• (D)
• 50g castor sugar
• Dash of salt

* Notes from The Little Teochew:

• 1. I used my vanilla sugar because I wanted a hint of vanilla in my cakes ... people who do not like a strong, eggy smell should add 1/4 tsp vanilla extract;
• 2. I used Top Flour instead of Cake Flour;
• 3. I used regular canola oil in place of corn oil ... any neutral-flavoured vegetable oil can be used;