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
Rationing in the United Kingdom about of meat. Offal and sausages were only rationed from 1942 to 1944. When sausages were not rationed, the meat needed to make them was so scarce that they often contained a high proportion of bread. Eggs were rationed and "allocated to ordinary consumers as available"; in 1944 thirty allocations of one egg each were made. Children and some invalids were allowed three a week; expectant mothers two on each allocation. Arrangements were made for vegetarians so that other goods were substituted for their rations of meat. Milk was supplied at each week with priority for expectant mothers and children