Not often you get to see the switching of a shawarma stick mid-service. But I guess when you're as busy as Mustafa's - my top tip for Berlin street food - this could come about anytime. The queue says it all...
So busy they got the next shawarma lined up outside the kiosk. Here it is, complete with trolley.
Getting on the spit. Two man job.
Then back in business. Slick.