Chicken with preserved lemon and olives is a classic moroccan dish. The roasting method calls for marinating whole chickens with a moroccan spice rub and then slow-roasting the chickens the next day. A savory onion, lemon, and saffron sauce is prepared stove top. This method is particularly useful for feeding a crowd, as most of the preparation can be done the previous day. Moroccan etiquette is to serve one chicken for every three adults. Increase the recipe proportionally for the number of chickens you plan to make. Also, try the conventional stove top method and tagine method of preparing this dish.