Co-founders Hiromichi Igarashi and Tadanori Akasakao channeled their collective experience as ramen chefs at restaurants in Japan and the U.S. into creating HiroNori Craft Ramen. A factory in the Los Angeles area makes its special recipe for noodles, available in thin or thick styles, and most of its ramen bases including a 24-hour simmered pork tonkotsu broth.