Born of the blessings of animal welfare — a supreme Kanagawa pork overflowing with sweetness.
Tanzawa Kogen Buta is a Japanese brand pork (meigara-buta) from Aikawa-machi, Aiko District, Kanagawa Prefecture, managed by Tanzawa Farm Co., Ltd. Breed / crossbreeding: (Landrace ♀ × Large White ♂) × Duroc ♂.
Tanzawa Kogen Buta (Tanzawa Highland Pork) is a brand pork that Tanzawa Farm, rooted in Aikawa Town, Aiko District, Kanagawa Prefecture, has continued to commit to since its founding in 1962. Surrounded by the majestic nature of the Tanzawa mountains — the farm’s pigs, handled with integrated management from production through to processing, have a sweet fat and minimal off-odor as their greatest appeal.
What stands out particularly in Tanzawa Kogen Buta’s rearing is its sincere approach to animal welfare. Up to 45 kg body weight, the pigs are raised in windowless barns shielded from external air effects to build a healthy body — then moved to a fermented bedding floor utilizing indigenous microorganisms. The pruned-branch-chip flooring stacked to a thickness of 1.2 meters has excellent insulation properties, realizing an environment where the pigs can spend winter warmly. Approximately 1.5 square meters per head of spacious pen space is secured, providing a free-roaming space where pigs can run freely.
The feed is also packed with commitment. An original feed is given — combining identity-preserved (IP-handled) corn and soybean as the primary ingredients with domestically grown barley, rice, and sweet potato. The natural sweetness derived from sweet potato gently permeates the fat, producing a clean flavor with no unpleasantness. During the fattening period, only plant-based oils are used, with antibiotic-free healthy rearing thoroughly practiced.
Shipped at approximately 180 days of age and approximately 125 kg — by raising slowly and patiently, finely grained meat quality and rich umami are nurtured. 13,000 head per year are slaughtered at Kanagawa Meat Center and delivered to tables nationwide through consumer cooperatives and delivery services. Please do experience the difference in simple preparations such as salt-koji grilling, marinated pork, and shabu-shabu that draw out the ingredient’s umami.
Basic Information
- Name
Tanzawa Kogen Buta - Production Area
Aikawa-machi, Aiko District, Kanagawa Prefecture - Management Body
Tanzawa Farm Co., Ltd. - Breed / Crossbreeding
(Landrace ♀ × Large White ♂) × Duroc ♂ - Meat Characteristics
Characterized by sweet fat and no off-odor. Pigs raised stress-free in spacious fermented-bed barns incorporating animal welfare have fine-grained meat and rich umami. Slaughtered at approx. 180 days and approx. 125 kg, offering the deep flavor of slow rearing - Feed Characteristics
Dedicated feed based mainly on identity-preserved (IP-handled) corn and soybean, blended with domestic barley, rice, and sweet potato. Only plant-based oils and no antibiotics during the fattening period. Sweet potato gives the fat a natural sweetness - Shipping Age
Approx. 180 days - Annual Production
13,000 head annually. Distributed nationwide primarily through co-ops and home delivery services (not available at general supermarkets). - Signature Dish
Salt-koji grilled pork, marinated pork (butazuke), shabu-shabu, tonkatsu, spare ribs - Certifications
Trademark registered. Fermented-bed rearing based on animal welfare; no medication (fattening period); no teeth clipping or ear notching - Related URLs
Tanzawa Farm Co., Ltd. (Official Site)
Kanagawa Pig Farmers Assoc. – Tanzawa Kogen Buta - Source
Branded Pork Guidebook 2026, p.110
Tanzawa Farm Co., Ltd. (Official Site)
Kanagawa Prefecture Pig Farmers Association (Official Site)
Kanagawa Pig Farmers Assoc. – Tanzawa Kogen Buta
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Last updated
6/21/2026
