Preheat the oven to 180C/350F/gas mark 4
Use a 450g/1 lb loaf tin.
Grease and line the loaf tin. Sift the flour, wheat germ and baking powder together, adding any bran left in the sieve.
In a separate bowl, cream together the butter, sugar and cottage cheese. Add the sour cream and mix well. Mash the bananas and fold in, alternately with the flour mixture. Pour into the tin. Bake for 1 hour. Turn out onto a wire rack to cool.
Icing. Sieve the icing sugar, and the rind and add enough lemon juice to make a thick icing. Spread over the cake.
