Doner kebabs are a ubiquitous fast food option in Europe. The sandwich is composed of a thick pita-like bread, a large flour wrap or lavash flatbread. Garnish with thinly shaved slices of lamb, chopped vegetables and a yogurt sauce. The meat is usually cooked on a rotating spit, but you can use your barbecue grill to get the job done. Add a dash of harissa for a little kick, if desired.