07/12/2024
Finally visited IIO Jozo perhaps Japan’s most renowned rice vinegar brewery.
Located in the picturesque fishing town of Miyazu, facing Wakasa Bay Area, it takes about three hours and two train transfers from Kyoto to reach this seaside gem.
Their exceptional vinegar begins with painstakingly cultivated rice in terraced fields, planted entirely by hand. The process involves steaming the rice, turning it into koji, preparing a fermentation starter (shubo), and brewing it into sake. This sake then becomes the base ingredient, “moto,” before acetic acid fermentation begins.
The acetic acid bacteria used have been nurtured in the brewery for over 120 years, a testament to their commitment to tradition. IIO Jozo takes on the entire fermentation process themselves—from koji-making to sake brewing, and finally to vinegar production. By prioritizing quality over quantity, they intentionally limit production while ensuring 30% of their sales go directly to customers, achieving higher profitability.
They also involve their customers in the rice planting process, creating a deeper connection and boosting loyalty. Their product lineup is diverse, ranging from vinegar blends with dashi, to pickle-friendly options, and even sauces for shabu-shabu. Particularly impressive are their high-quality toppings, like premium Japanese pepper (sansho), tailored for various culinary uses.
Among their most unique offerings is a vinegar made from red sweet potatoes, touted for its health benefits, including dramatically reducing cholesterol and blood sugar levels—a true elixir.
Their efforts have not only elevated their craft but also revitalized the area’s gastronomy. IIO Jozo also runs the Italian restaurant and the sushi kaiseki restaurant , adding to their legacy.
Oh, I must add note, the owner, , is undeniably good looking guy😆
This brewery, encapsulating everything about Japan’s fermentation mastery, is a must-visit destination for the next Fermentation Master Course.
Next courses are planned for late May and September 2025. Stay tuned!