Mosbolletjie rusks

To make the cake:
1. Preheat the oven to 180 °C. Grease and line a rectangular 25 x 35-cm beer crate box or baking tin.
2. Sift together the cake flour, sugar, bicarbonate of soda and salt.
3. In another bowl, mix together the eggs, oil, vanilla, amasi and vinegar.
4. Add the wet ingredients to the dry ingredients and mix very well to make the batter.
5. Spoon the batter into the prepared beer crate box or baking tin and bake for about 25 minutes until done (when a skewer inserted in the centre comes out clean).
To make the buttercream:
6. Beat the butter or baking margerine until light and fluffy, then add the egg white powder (if using).
7. Gradually add the icing sugar and beat well.
8. Gradually add the boiling water if the icing becomes too thick, and beat the buttercream very well for about 10 minutes until it becomes light and fluffy.
9. Add your flavouring of choice and beat again until incorporated.
This is an extract from Baking by Christine Capendale, published by Human & Rousseau, retailing for R420.