Kronans Kaka

• 3½ ozs. of butter
• 11 ozs. of castor sugar
• 3

Cream the butter and sugar with the yolks of egg, add the grated potatoes, working the mixture for 30 minutes. Add the ground almonds, mix thoroughly and finally add the whites of eggs, beaten to a stiff froth. Pour the mixture into a buttered cake tin, sprinkled with breadcrumbs, and bake in a fairly cool oven for about 45 minutes. Let it stand for 15 minutes before turning ou