Brother's gone for me, bless!
I have not one, but 2 different recipes for you.
The first, is a basic Victoria sandwich cake mix, 4 oz of caster sugar, butter/marg/SR flour and two eggs, 2 tablespoons full of Camp coffee essence, or if a sronger coffee flavour is required, 1 heaped tablespoon coffee disolved in 1 tablespoonful boiling water.
Butter icing as below
Bake in two 7 inch tins, 180C, 350F gas mark 4 25-30 mins
The other is virtually fatless:
4 eggs, 6oz caster sugar, 4oz plain flour, 1 tablespoon oil, 4oz finely chopped walnuts
Whisk eggs and sugar until thick and leave a trail, fold in flour gently and add oil. Divide between two 8 inch tins, bake 190C, 375F or gas mark 5 for 30-35 mins.
Butter icing
8oz Butter
1lb icing sugar
2 tablesp milk
2 tablesp Coffee essence (or as before with coffee and boiling water)
walnut halves to decorate