A type of bread flavored with walnuts that are chopped or ground. Like the British walnut bread, there are many variations of the French version. Most are made with a basic yeast dough of all-purpose or bread flour and some recipes include whole-wheat flour and occasionally rye flour. The dough is kneaded with the chopped or ground walnuts near the end of the kneading time. The dough is formed into a variety of shapes, but most often is formed into a round hearth bread shape. Most of the variations of pain aux noix are excellent when served with strongly flavored cheeses.