Cassoulet only beans, tomato sauce, sausages, and bacon. More expensive versions are likely to be cooked with goose fat and to include Toulouse sausages, lamb, goose, or duck confit. Haute cuisine versions require mixing pre-cooked roasted meats with beans that have been simmered separately with aromatic vegetables, but this runs counter to cassoulet's peasant origins. In the process of preparing the dish it is traditional to deglaze the pot from the previous cassoulet in order to give a base for the next one. This has led to stories, such as the one given by Elizabeth David, citing Anatole France, of a
Morteau sausage in this mountainous region the animals are fattened traditionally. In addition, to be permitted to use the label "Saucisse de Morteau", the sausages must be smoked for at least 48 hours with sawdust from conifer and juniper within the tuyé. It is not cooked, however, as the combustion is accompanied by a strong current of air. These sausages are guaranteed by the IGP label, which denotes their quality, origin and method of preparation as a regional French specialty. Authentic Morteau has a metal tag as well as a small wooden stick wrapped around the end of the link. Morteau sausage