Jerry
I once cooked a leg of lamb tandoor. I stuck 3 skewers through the leg so it stood up inside the tandoor like a tripod. I marinated it first. It was a bit of an expensive disaster. I seriously misjudged the cooking time and incinerated it. It was a long time ago now, and cant for the life of me remember how long I left it cooking for, but it wasn't long at all. Maybe 30 minutes or so? At the time I didn't even think about the dripping fat igniting as well...
If I had got it right though, it would definitely have been black on the outside but tender on the inside. It would also have skewer holes running through it too of course that I would imagine you would have seen in your meal out.
Just a thought
Regards
Mick