Raised on a feed blending six grains — wheat, barley, rice and more — a fine-quality brand pork born in Gunma Prefecture.
Joshu Rokkokuton is a Japanese brand pork (meigara-buta) from Gunma Prefecture, managed by I-Pork Co., Ltd. Breed / crossbreeding: Female (Landrace × Large White) × Male: Duroc.
Joshu Rokkokuton (Joshu Six-Grain Pork) is a brand pork produced by I-Pork Co., Ltd., based in Maebashi City, Gunma Prefecture. As the name suggests, an original designated feed balanced with 6 varieties of grain — wheat, barley, rice, corn, milo (sorghum), and soybean — is used, and of the Rokkokuton brand produced throughout Japan, those produced in Gunma Prefecture are given the ‘Joshu’ prefix. By giving a feed combining grain-type starchy ingredients with high-nutrition legumes and miscellaneous grains, the unique umami of pork deepens for a rich, flavorful finish.
The meat quality is firm, with a fine grain — the pale cross-section and white, beautiful fat are eye-catching. Even after heating, a gently melting texture in the mouth can be enjoyed.
The rearing uses a three-breed cross — Landrace × Large White as the dam line, crossed with Duroc as the sire line — producing a meat quality that combines both flavor and softness. Shipping is targeted at approximately 180–190 days of age, with the umami deepening further through patient, time-taking rearing.
Production is consistently carried out at I-Pork Co., Ltd.’s designated farms — delivering stable quality under the quality management system of the Ito Ham Yonekyu Holdings Group. The trademark ‘Joshu Rokkokuton’ was formally registered in May 2023, elevating the reliability of the brand. Even in simple preparations like shabu-shabu, the umami nurtured by the 6 grains and the sweetness of the fat can be savored to the fullest.
Basic Information
- Name
Joshu Rokkokuton - Production Area
Gunma Prefecture (designated farms within the prefecture) - Management Body
I-Pork Co., Ltd. (Ito Ham Yonekyu Holdings Group) - Breed / Crossbreeding
Female (Landrace × Large White) × Male: Duroc / Female (Large White × Landrace) × Male: Duroc - Meat Characteristics
Rich umami from a designated compound feed combining 6 grains. Firm, fine-grained meat; fat is white, clean, and sweet - Feed Characteristics
Original designated compound feed blending six grains — wheat, barley, rice, corn, milo (sorghum), and soybean — in balanced proportions - Shipping Age
Approx. 180–190 days - Annual Production
Approx. 20,000 head annually - Signature Dish
Shabu-shabu - Certifications
Trademark registered: May 10, 2023 (as Rokkokuton) - Related URLs
Gunma Pork Kingdom | Brand Directory - Source
Branded Pork Guidebook 2026, p.81
Gunma Pork Kingdom | Brand Directory
Related brand pork
Last updated
6/21/2026
