6 egg yolks
2 cups sugar
1 cup oil
1 cup warm water
1 teaspoon vanilla
2 cups self raising flour
3 tablespoons cornflour
2 teaspoons baking powder
1/2 teaspoon salt
6 egg whites
Whisk together the first 5 ingredients until all the sugar is dissolved, approximately 8 minutes. Sift the dry ingredients together three times and then gentle stir into the egg mixture. Whisk the egg whites until soft peaks from and fold gently into the batter. Fill cupcakes 3/4 full and bake at 180 degrees until well risen, approximately 20 minutes.
Basic vanilla icing:
125g butter at room temperature
500g icing sugar, sifted
1 teaspoon vanilla extract
1 tablespoon lemon juice
milk
Beat the butter until soft then add the icing sugar gradually. Add vanilla and lemon juice and thin down with a little bit of milk if necessary.
Variations:
For chocolate cake, use 3 tablespoons of cocoa instead of cornflour
For coffee cake, use strong black coffee instead of water