Chocolate potato cake
Cream butter and sugar together until light in colour and creamy. Beat in egg slowly until mixture is smooth.
Sieve the flour, cocoa and baking powder and fold into the butter/sugar/egg mixture. Lastly stir in the potato and milk.
Pour the mixture into a greased, lined 10” cake tin and bake at 190oC for 35-40 mins until a skewer comes out clean from the centre.
Cool on a rack.
Zest the orange and reserve. Sieve the icing sugar into a bowl, whisk in half the orange juice to form a paste that will pour over the cake. Pour icing over the cake and decorate with the zest.