YOU WANT everything on it, you order it komplett,” instructed Berlin food blogger Per Meurling as we strolled up to a window at a döner kebab shop in Kreuzberg, the city’s hipster hood, to order a hulking meat sandwich. Mr. Meurling, a Swedish expat who moved to the German capital in 2009 to work in mobile gaming, now trains his laser focus on the city’s ubiquitous dish: döner kebab sandwiches. He not only publishes a regularly updated list of the city’s best versions on his website, berlinfoodstories.com, but leads occasional—and immensely filling—tours across the city, zipping from one döner spot to the next.

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