Raised in the valley between the Southern and Central Alps — a top-quality Shinshu brand pork born of carefully chosen feed.
Hayashi Farm Ton – Genbuta / Shinshu Yukibuta is a Japanese brand pork (meigara-buta) from Izuki, Iida City, Nagano Prefecture, managed by Hayashi Farm Co., Ltd. Breed / crossbreeding: Female (Middle Yorkshire × Large White) × Duroc.
In the Ina Valley of Iida City, Nagano Prefecture — nestled between the Southern and Central Alps — Hayashi Farm Co., Ltd. raises with devoted care two brand porks overflowing with individuality: ‘Genbuta’ (Phantom Pork) and ‘Shinshu Yukibuta’ (Shinshu Snow Pork). The feed uses an independently blended formulation of local buckwheat, rice koji, almonds, and others. Rutin derived from buckwheat has antioxidant action; the fermentation components of rice koji regulate the gut environment and support the pig’s health. Nuts including almonds add a fine flavor to the fat. This plant-based-centered feed design is the secret to drawing out the pig’s inherently fine-grained meat quality and sweetness.
The breed incorporates the rare Middle Yorkshire — even within Japan — into the maternal lineage. The Middle Yorkshire has the characteristic of extremely fine muscle fibers that readily develop marbling. By crossing with Duroc — known for powerful umami — a pork of both delicacy and depth is born. ‘Genbuta’ was trademark-registered in 2003 and ‘Shinshu Yukibuta’ in 2004 — both brands are raised over approximately 210 days — longer than standard pigs — growing slowly. By taking time, the umami of the meat is firmly concentrated, and the sweetness of the fat becomes richer.
In shabu-shabu, a clear, transparent broth can be enjoyed — in tonkatsu, the result is crispy outside and juicy inside. Regardless of cut — loin, belly, and more — a pork in which the inherent deliciousness of the ingredient can be savored just as it is. Annual shipments are approximately 2,000 head, making it highly rare. Please do savor this luxurious specialty nurtured by the Shinshu earth.
Basic Information
- Name
Hayashi Farm Ton – Genbuta / Shinshu Yukibuta - Production Area
Izuki, Iida City, Nagano Prefecture - Management Body
Hayashi Farm Co., Ltd. - Breed / Crossbreeding
Female (Middle Yorkshire × Large White) × Duroc - Meat Characteristics
Tender meat with fine muscle fibers from the Middle Yorkshire and fine marbling. Rich in fat sweetness and umami; in shabu-shabu, little scum and a clear broth - Feed Characteristics
In-house blended, plant-based feed containing buckwheat, rice koji, almonds, and more. Raised on antibiotic-free compound feed - Shipping Age
210 days - Annual Production
Approx. 2,000 head/year. Main slaughterhouse: Yamanashi Prefecture Meat Market. Main wholesalers: Kyodo Shiryo and Naganoken Nokyo Chokuhan Co., Ltd. - Signature Dish
Shabu-shabu, tonkatsu, eisbein - Certifications
Trademark registered — Genbuta: July 4, 2003 / Shinshu Yukibuta: July 12, 2004 / Brand regulations: none / Farm HACCP: none / JGAP: none - Related URLs
Hayashi Farm (Official Site)
Buta Trace – Hayashi Farm - Source
Branded Pork Guidebook 2026, p.121
Hayashi Farm (Official Site)
Buta Trace – Hayashi Farm
Related brand pork
Last updated
6/21/2026
