Persian Lamb and Beef Kebabs

Ground lamb and beef kebabs (kubideh) are the truest test of the competency of an Iranian kebabi man. Kubideh is the Persian word for chopped or mashed and, when properly prepared, these kebabs are moist, succulent, and feather light—no small feat considering that the principal ingredients are beef and lamb, and rather fatty (at least 25 percent) beef and lamb at that. The following recipe requires a little work, but the results are astonishing. Serve kubideh, unskewere