A recipe from the excellent book ” Home Food” by Olia Hercules. It can be served with grains such as couscous or freekah but also with rice, boiled and crushed potatoes or flatbreads . Lamb shanks can be used as a cheaper alternative to shoulder if you like. If you like you can shred the cooked lamb and mix it with the juices up to a day before and keep in the fridge, then just reheat in a lidded pan with a splash of water mixed in, or in a foil baking tray, before serving.