History
The cloudy tonkotsu broth was born around 1941 at a dockside stall in Nagahama. Mitsugu Sugimoto's Sankyu and Hizo Tsuda's Ganso Nagahamaya are the most-cited origin candidates. The thin straight noodle, the kaedama refill, and a tare poured into the bowl before the broth all emerged together. Tonkotsu spread across Kyushu through the 1950s, with regional variants in Kumamoto (garlic-laced) and Kurume (richer). Today Hakata Issou, Ippudo Daimyo, Hakata Ikkousha and Shin-Shin run the canonical Fukuoka counters, and the Hakata format has since exported worldwide through chains like Ippudo and Ichiran.