2 eggs
125g butter
1 heaped tsp cream of tartar
1 level tsp baking soda
1 lemon or orange
1 teacup sugar
1 cup flour
1/2 cup milk.
Beat eggs and sugar well.
Add grated rind and 2 tsps lemon juice.
Add sifted flour and cream of tartar.
Meanwhile, bring milk and butter to boil.
Add baking soda, then add hot mixture to ingredients in bowl.
Mix gently.
Bake in 20cm cake tin or sponge roll tin 20-30 mins at 180c.
Ice with lemon butter icing using remaining lemon juice.