Sponge
1 cup buttermilk
1 cup oil
2 cups flour
3 TBS cocoa
1 tsp vinegar
2 tsp baking/koek soda 
1 1/2cups sugar
1/3 cup butter
4 large eggs 
3 TBS pink food colouring

Cream butter and sugar together …add eggs one by one and oil the beat add vinegar food colouring and buttermilk and mix

Mix all the other ingredients together and add into the butter mixture 
Pour into a baking tin and bake at 190 for 30 mins

Buttercream
1 cup soft margarine
1 1/2 cup icing sugar
1 TBS milk

Mix everything together and ICe the cake

Source: Zaza Nkosi