This style is characterized by a salty shoyu and tonkotsu soup base, with thick dense noodles and fatty pork chunks.

[15] According to Noriko Arai, an economics professor at Sophia University, Ramen Jiro employs a "worshipper" type of marketing, relying on a small group of enthusiastic customers, typically students and salarymen.

[4] Some Jirorians make a pact to visit all 40 Jiro franchises[3] and regard the first shop in Mita as "the sacred place."

When he stopped his updates in 2016 due to "an unexpected accident," several prominent Japanese internet sites reported the incident.

Utilizing the alpha version of AutoML by Google, it had a 94.5% success rate when differentiating between the locations despite the bowls looking so similar.