Doner Kebab was actually invented in Berlin, Germany, even though most people think its from Turkey. Well, technically, the inventor is called Kadir Nurman and came to Germany as a guest worker from Turkey. I once came across a store called "German Doner Kebab" that sells the typical Doner in a bun in the US, Canada, and other countries. That is probably the only German food that is popular in other countries, I guess sauerkraut, sausages and potato salad have not yet took off internationally.