Raised in the great nature of Tsunan, the heavy-snow heartland — a premium pork born of seaweed and minerals, a true Koshihikari of the pork world.
Tsunan Town, located at the southern tip of Niigata Prefecture, is known as one of Japan’s heaviest snowfall areas. Born in the great nature blessed with rich snowmelt water and clear air are ‘Tsunan Pork’ and ‘Koshino Hikari Pork’ — both brand porks produced by Tsunan Pork Co., Ltd., born from the same farm but divided into 2 grades by differences in rearing method. The defining feature of Tsunan Pork is the uniquely devised feed. Based on a specific compound feed, by adding seaweed and FFC minerals, Vitamin E is approximately 3 times more and oleic acid approximately 10% more than standard pork. Oleic acid has the action of lowering the fat’s melting point — bringing a gently melting, soft sweetness of fat in the mouth. The abundant Vitamin E means less off-odor — a clean, refreshing finish. In particular, the upper-grade Koshino Hikari Pork blends 20% Uonuma-produced Koshihikari rice into the finishing feed — given for 60 days before shipment. That starch becomes energy within the pig’s body — producing a finely-grained, springy meat quality. Non-gamey with a mellow sweetness spreading — characterized by a clean mouth feel. Representative eating methods include tonkatsu, shabu-shabu, and ginger pork stir-fry. The flavor can be fully enjoyed in simple preparations that draw out the ingredient’s umami. Certified as a Niigata Clean Pork Farm — a safe, reliable production environment is in place. Approximately 7,000 head are shipped annually — distributed through Tsunan Pork Processing Center and Taishin Chikusan Kogyo.
Basic Information
- Name
Tsunan Pork / Koshino Hikari Pork - Production Area
Tsunan Town farms, Nakauonuma District, Niigata - Management Body
N/A - Breed / Crossbreeding
Three-breed cross (LWD): Female (Landrace x Large White) x Male Duroc - Meat Characteristics
Mineral-rich, naturally vital lean from seaweed and FFC mineral feed (Tsunan Pork); elevated fat sweetness and clean melt from Uonuma Koshihikari finishing (Koshino Hikari Pork premium tier) - Feed Characteristics
Designated compound + seaweed powder + FFC minerals (base Tsunan Pork); premium Koshino Hikari Pork: adds 20% Uonuma Koshihikari rice in finishing feed for the final 60 days - Shipping Age
Not specified (Koshino Hikari Pork: final 60-day Koshihikari rice finishing) - Annual Production
Approx. 7,000 head annually. Distributed through Tsunan Pork Processing Center and Taishin Livestock Industry. - Signature Dish
N/A - Certifications
N/A - Related URLs
Koshino Hikari Pork – Tsunan Pork Premium Brand (Official Site) - Source
Branded Pork Guidebook 2026, p.126
Tsunan Town Official – Tsunan Pork
Attend Park – Tsunan Pork
Tsunan Pork – Premium Brand (Koshino Hikari Pork)
Last updated
6/21/2026