Roast Shoulder of Lamb with Couscous and Date Stuffing

This is sumptuous and extremely easy. The meat is cooked very slowly for a long time until it is meltingly tender and you can pull the meat off the bones with your fingers. The stuffing—it is the traditional stuffing for a whole lamb—is sweet with dates and raisins and crunchy with almonds. (In Morocco, they add sugar or honey but that makes it too sweet for me.) The couscous needs plenty of butter as there is no sauce, but you can substitute oil if you prefer. Try to get the fine-ground variety of couscous called seffa (see page 28), otherwise use the ordinary medium-ground one. For the dates, use the Tunisian Deglet Nour or Californian varieties that you can find in supermarkets. A shoulder of spring lamb is always fatty but most of the fat melts away during the long cooking. If it appears too fatty, as might be the case with an older lamb, carefully remove some of the fat before cooking.