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
Alheira pork, forbidden in Judaism; this put them at risk of being noticed not to hang sausages, traditionally made of pork, in their "fumeiros" (smokehouses). As a way to avoid attracting the attention of the Portuguese Inquisition or in rural areas the Portuguese Christians, they began to make sausages from other meats such as poultry and game, mixed with bread for texture. With time, the dish spread to the remaining population and became an example of typical Portuguese cuisine, though nowadays its preparation is no longer strictly guided by Jewish dietary precepts. Alheiras were traditionally grilled or roasted and served with