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ROSANJIN SHOYU SOY SAUCE
Ref : NISYSH1
Yuasa soy sauce aims for culinary excellence by incorporating traditional production methods and all-natural ingredients renowned for their quality. Yuasa soy sauce undergoes a traditional fermentation process lasting between one and two years.
Over time, this process has gone out of fashion, limiting fermentation time to one to six months. However, Yuasa soy sauce quality has improved as fermentation time has decreased. Not only does Yuasa soy sauce not reduce fermentation time, it does not use machines to make its soy sauce. Instead, it is produced by hand using traditional methods. Ingredients used in Yuasa soy sauce are sourced entirely in Japan, with no artificial preservatives, flavourings or colourings.
Water and soybeans used are particularly important. Water used comes from the Yuasa region, and its mineral content is ideally suited to making soy sauce. Water quality is one of the main reasons why Yuasa became the only supplier of soy sauce in Japan after its invention. Black soybeans (kuromame) are a unique addition, influenced by a production style found in a cookbook written 1,500 years ago.
Beans are grown in Tanba, Kyoto, famous for being one of the only places in Japan to produce them. These ingredients help create the subtle complexities of soy sauce, which should be treated in the same way as fine wines.
Yuasa soy sauce has been very well received by chefs in Japan and around the world. Yuasa soy sauce is also at the top of Japan's official soy sauce grading system, which tests, among other things, the nitrogen content of soy sauce. In Japan, the town of Yuasa is part of Nation's Preservation District for groups of Historic Buildings.
Since 2017, Yuasa's soy sauce manufacturers have been listed as a Japanese Heritage Site. In the words of a Japanese connoisseur, Rosanjin soy sauce elevates soy sauce to the level of art and tradition in all their nobility. This unique sauce is made from the finest Hokkaido soybeans, wheat and rice. Rice is unusual in soy sauces. Here, it makes umami explode.
This truly rare product guarantees Yuasa's master craftsmen mastery. This sauce is not very salty compared to traditional soy sauces (approx. 11.5% salt). An exceptional bouquet for a shoyu already recognized by the most renowned authorities. This shoyu is rare and available in limited quantities. Given its rarity and exclusivity, this product remains affordable.
Data sheet
- Origin
- Yuasa, Wakayama Japan
- Brewery
- YUASA SHOYU
- Capacity
- 200 ml
- Weight
- 0.238 kg
- Packaging
- glass bottle
- Ingredients
- Wakayama water, Hokkaido soybeans, Hokkaido wheat, Nagasaki salt, Hokkaido rice.
- Storage
- Store in a cool place after opening.
- Allergenic(s)
- soya
wheat - Nutritional values
- Per 100 g : energy 100 kcal (427 kJ) ; fat <0,5g, of which saturates <0,5g ; carbohydrate 14g, of which sugars 7g ; protein 11g ; salt 12,7g.

Yuasa soy sauce aims for culinary excellence by incorporating traditional production methods and all-natural ingredients renowned for their quality. Yuasa soy sauce undergoes a traditional fermentation process lasting between one and two years.
Over time, this process has gone out of fashion, limiting fermentation time to one to six months. However, Yuasa soy sauce quality has improved as fermentation time has decreased. Not only does Yuasa soy sauce not reduce fermentation time, it does not use machines to make its soy sauce. Instead, it is produced by hand using traditional methods. Ingredients used in Yuasa soy sauce are sourced entirely in Japan, with no artificial preservatives, flavourings or colourings.
Water and soybeans used are particularly important. Water used comes from the Yuasa region, and its mineral content is ideally suited to making soy sauce. Water quality is one of the main reasons why Yuasa became the only supplier of soy sauce in Japan after its invention. Black soybeans (kuromame) are a unique addition, influenced by a production style found in a cookbook written 1,500 years ago.
Beans are grown in Tanba, Kyoto, famous for being one of the only places in Japan to produce them. These ingredients help create the subtle complexities of soy sauce, which should be treated in the same way as fine wines.

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