Burhan Cagda's most famous kebab, kusbasi, is the quintessence of what shish kebab should be. It's made from chunks of lamb cut from the loin and interlaced with thin slices of lamb fat cut from the saddle (most kebab houses just use the leg), marinated in spices and grilled over oak. More Middle Eastern Recipes
Aleppo pepper is a Turkish crushed chile, which is more robust and slightly fruitier that regular red chile flakes. If you can't find Aleppo pepper, substitute 1/4 teaspoon of paprika and a tiny pinch of cayenne.
Grenache, with its soft red-cherry flavors, balances the tangy notes in this marinade and in the sumac salad. The variety does especially well along Spain's Mediterranean coast, where it's called Garnacha.