Organic brown rice kurozu from a Gifu vinegar maker founded in 1876 — clean, sharp, and precise, with a rounded body. Acidity 4.5%.
Kurozu is Japanese black vinegar, brewed from brown rice rather than polished rice. It carries more depth and body than standard rice vinegar, and it is still uncommon in American kitchens.
Minou Organic Jungenmai Black Vinegar is brewed by a house in Gifu Prefecture that has been making vinegar since 1876. Their working principle is that vinegar begins with sake. They mill the rice themselves, cultivate the koji, and build the rice mash in stages before acetic fermentation ever starts. That upstream work is where the character of the finished vinegar is set.
Jungenmai means pure brown rice. Organic brown rice is the only ingredient — no added alcohol, no colorant, nothing else. It is certified under Japan's Organic JAS standard.
The result is a black vinegar that runs clean. The acidity sits at 4.5%, the body is rounded and controlled, and the finish is short enough to use raw in a vinaigrette without taking the plate over. It still holds up in braises and reductions.
Ayako, Umami Curator at The House of Umami, visited the brewery in the mountains of Gifu and toured the production floor. She found a facility far larger than she had pictured, run under quality controls she describes as uncompromising. In tasting sessions she runs with Michelin-starred chefs, its clean, sharp profile drew especially positive feedback. This is the bottle she keeps for herself.