I've waited more than a year to write this review because I first wanted to try some of the top-reviewed ramen offered places like London, New York and LA. So two years later I can say with confidence that Cocolo possibly offers the best ramen outside Japan.
Great: outstanding broth, fantastic atmosphere, incredibly friendly staff, good variety of ramen (try Tantan for something other than the typical pork belly ramen)
Good: the noodles themselves are good but probably a tad too firm
Bad: Waiting times during peak hour, only open after 6m,
This is my go-to restaurant for any friends visiting Berlin.