Born of an unwavering commitment to plant-based feed — Saitama’s proud brand pork, rich in umami and refreshingly clean in finish.
Bushu-ton (Musashi Province Pork), raised by Sakamoto Farm in Yorii Town, Osato District, Saitama Prefecture, is a brand pork appealing for its umami and clean, refreshing finish. Trademarked under ‘Bushu-ton’ for fresh cuts and ‘Balzwein’ for processed products, the trademark was obtained on June 17, 2011. At Sakamoto Farm, the small-scale operation of 200 sows is leveraged to provide devoted, individual care to each animal. Air conditioning is installed in the barns year-round to maintain a comfortable environment for breeding boars. Feed amounts are adjusted per sow, with back fat inspections carried out for thorough health management. At the time of piglet birth, careful supervision of colostrum intake ensures the rearing of healthy pigs. The feed adopts an original blend of plant-based feed centered on whole-kernel corn, combined with charcoal, rice, and eco-feed. The commitment to plant-based ingredients produces the clean, refined flavor and the never-tiring lean umami unique to Bushu-ton. The breed is LWD three-breed cross — Landrace female × Large Yorkshire male crossed with Duroc male — shipping age 180 days, shipping weight 115 kg. Annual shipments are approximately 4,000 head, distributed through Seiken Commerce. Pairs well with a wide range of preparations including tonkatsu and shabu-shabu that draw out the refreshing lean umami, and ginger pork stir-fry where the sweetness of the fat stands out. Sausage made from self-farm Bushu-ton won a gold medal at the German International Contest — its quality is recognized internationally as well.
Basic Information
- Name
Bushu-ton - Production Area
Sakamoto Farm (Yorii-machi, Saitama) - Management Body
N/A - Breed / Crossbreeding
Three-breed cross (LWD): Female (Landrace x Large White) x Male Duroc - Meat Characteristics
Clean, non-gamey lean umami with a refreshing aftertaste; plant-based feed creates a refined, never-tiring flavor - Feed Characteristics
Original blend centered on whole-grain corn with additions of charcoal, rice, and eco-feed; entirely plant-based - Shipping Age
180 days / 115 kg - Annual Production
Approx. 4,000 head annually (wholesaler: Seiken Shoji; primary slaughterhouse: Kenboku Meat Center) - Signature Dish
N/A - Certifications
Farm HACCP: not applicable
Trademark registration: June 17, 2011
Gold Prize winner at the IFFA International Meat Industry Competition, Germany (2017 and 2019) - Related URLs
Sakamoto Farm / Warzwein Official Site
Buta Trace Pig Traceability System – Farm Detail - Source
Branded Pork Guidebook 2026, p.93
Sakamoto Farm / Warzwein Official Site
Buta Trace Pig Traceability System
Last updated
6/21/2026