Loaf (or miche) of French sourdough, called as well as Pain de campagne, on display isolated on a black background held by female hands. Pain de Campagne is a typical French huge loaf of bread. Picture of a loaf of pain de campagne French Sourdough on a black background. Pain de campagne, or country bread, also called French sourdough is a large round loaf, called miche made from natural leavening or baker's yeast and a combination of white flour with whole wheat flour and rye flour