Nonnie'S Sponge Cake

• Cake:
• 4 eggs
• 3/4 cup castor sugar
• 2 tsp cream of tartar
• 1 tsp bi-carb soda
• 1 Tbsp plain flour
• 2 Tbsp cornflour
• 3 Tbsp custard powder
• Coffee cream icing:
• 115g butter
• 2 cups icing sugar
• 1 tsp vanilla
• 2 Tbsp water
• 1/2 tsp coffee essence
• 1 egg - separated

1. For the cake:
2. Beat whites with sugar until fluffy.
3. Beat yolks with 1 Tbsp cold water.
4. Add whites to yolks and mix.
5. Sift remaining ingredients 3 times and fold into eggs.
6. Bake at 160C for 20 minutes.
7. For icing:
8. Cream butter.
9. Add sugar and beat until the mixture begins to stiffen.
10. Add vanilla, water, coffee essence and egg yolk and beat well.
11. In a separate bowl, beat egg white with a pinch of salt.
12. Add whites to first bowl and beat to combine.

eggs, castor sugar, cream of tartar, soda, flour, cornflour, custard powder, coffee cream icing, butter, icing sugar, vanilla, water, coffee, egg

Taken from www.epicurious.com/recipes/member/views/nonnies-sponge-cake-51977801 (may not work)