Döner is one of the most well know Turkish cuisine around the Europe. But I have to say, any döner you eat out of Turkey doesn't even like a real one.. Since döner is a common fast food, I had the chance to try hundreds of places when I was a student. But Bambi has always been my favorite. It has several branches around Istanbul, but I recommend the ones in Taksim. And when you go there, order a "kaşarlı dürüm" (Döner wrap with Turkish cheddar cheese). Actually order 2, one is never enough!