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 traditional recipes, which had previously been in decline. However, many cheaper sausages contain mechanically recovered meat or meat slurry, which must be so listed on packaging. There are various laws concerning the meat content of sausages in the UK. The minimum meat content to be labelled Pork Sausages is 42% (30% for other types of meat sausages), although to be classed as meat, the Pork can contain 30% fat and 25% connective tissue. Often the cheapest supermarket pork sausages do not have the necessary meat content to be described as "pork sausages" and are simply labelled "sausages"; with even less