" To be a ramen writer of Kamimura's stature, you need to live in a ramen town, and there is unquestionably no town in Japan more dedicated to ramen than Fukuoka. This city of 1.5 million along the northern coast of Kyushu, the southernmost of Japan's four main islands, is home to two thousand ramen shops, representing Japan's densest concentration of noodle-soup emporiums. While bowls of ramen are like snowflakes in Japan, Fukuoka is known as the cradle of tonkotsu, a pork-bone broth made milky white by the deposits of fat and collagen extracted during days of aggressive boiling. It is not simply a specialty of the city, it is the city, a distillation of all its qualities and calluses.
Indeed, tell any Japanese that you've been to Fukuoka and invariably the first question will be: "How was the tonkotsu? "

― Matt Goulding , Rice, Noodle, Fish: Deep Travels Through Japan's Food Culture