Peel the potatoes and boil. Smash and leave to cool. Sprinkle on the flour and salt them, and crushing. Yeast was suspended in water, put the egg and mix with a fork. Add the mixture to the potatoes and smooth dough is kneaded. Add the walnuts cut in large pieces knead lightly once more and allow to rise for 1 hour. Knead lightly again formed of two loaves of bread, allowed some time to swell again. Heat the oven to 180 C. breads are put in a pan with baking paper, make several cross cut and bake about 25 minutes. * The bread becomes more aromatic, if the walnuts before kneading dough, constipation under the grill or in a pan without oil.