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
Sausage coated in mustard or cut in slices and fried. The sausage got its name from Falun, the city from where it originates, after being introduced by German immigrants who came to work in the region's mines. Unlike most other ordinary sausages it is a typical home dish, not sold at hot dog stands. Other Swedish sausages include "prinskorv", "fläskkorv", "" and "isterband"; all of these, in addition to "falukorv", are often accompanied by potato mash or "rotmos" (a root vegetable mash) rather than bread. "Isterband" is made of pork, barley groats and potato and is lightly smoked. In Iceland, lamb