There's a bit of confusion here about what a "Doner kebab" actually is.
The elephant's leg slowly rotating on the vertical spit warmed to germ breeding optimal temperature is the beast (beast cocktail) on which the article is based.
I've spent a while living in Germany and these are the "rules" there.
An AC said that it was a Gyros. In Der Vaterland Gyros is the strips of marinaded pork on a vertical and cooked 'till the outside goes crispy, sliced into little chunks and serves in a fluffy pitta bread, with tsatsiki and feta melted on it for a proper mouth-gasm. These are made by the Greek guys.
The Turks make Doner Kebap which is like the UK, but with far better meat and, yes, served on a plate with sauces. Not even a hint of pig therein.
It used to be a favourite hobby of mine to watch a new intake of young squaddies get munted on beer they don't know, look for the only words they think they understand - "Doner" and "Kebap", order up and sit at a table to wait.
When the lovingly prepared and presented snack is placed in front of them on a plate with a knife and fork the general response is "What the fuck's this shit supposed to be then?"
A whole lot better than the shit we eat at home mate, that's what.
Hungry now. When's the next Eurostar?