Kasahara Seika (Senbei Brothers)

Kasahara Seika traces its roots to 1945, when it was founded in Tokyo’s Shinjuku City as Kasahara Senbei-ya. Following a city redevelopment project tied to the 1964 Tokyo Olympics, the factory relocated to Katsushika City in 1959, and officially began operations under the name Kasahara Seika in 1960. In 1970, the company moved again to Funabori, Edogawa City, where it remains today. Fourth-generation president Kasahara Takenori and his younger brother, factory manager Tadayoshi, continue to operate the original machinery while also developing bold new flavors. In 2014, they launched their own brand, Senbei Brothers, with the concept: “Make senbei tasty and cool.” The lineup spans from traditional tamari soy sauce to inventive options like truffle potato, offering something for every palate.