This recipe is included in the earliest Abbasid cookery book and is attributed to the ill-fated Musa al-Hadi, whose caliphate lasted only around a year (785-6) before he was succeeded by his younger brother, the great Harun al-Rashid. The dish is quite simple to make, and requires lamb’s liver, vinegar (it works well with apple cider, too!), murrī (use soya sauce as a substitute), sesame oil, coriander, cumin, caraway, and pepper. The liver is cut into narrow strips and marinated in the seasonings and spices before frying. When serving, sprinkle on some more spices. They make a wonderful liver sandwich, with sauce and trimmings of your choice.