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Japan's fermentation system treated as one connected tradition rather than separate recipes. Covers koji as the organism underlying miso, shoyu, sake, mirin and amazake, then moves to tsukemono pickling, nukazuke rice-bran beds and shio-koji. Includes temperature ranges, timelines, and a clear section on what spoilage looks like.
View on Amazon →Miso, shoyu, sake, mirin and amazake read like five unrelated products on a pantry shelf, but they share a single organism underneath: koji. This book starts there, treating koji as the thread that connects Japan's fermentation tradition rather than presenting each product as its own isolated recipe.
From that shared foundation it moves into tsukemono pickling and the daily maintenance a nukazuke rice-bran bed actually requires, plus shio-koji as a seasoning technique in its own right rather than a fermentation curiosity. Precise temperature ranges and timelines run throughout, alongside a plain, unglamorous section on identifying spoilage versus normal change.
For anyone who has tried a single fermentation recipe before and wants to understand the system underneath it, not just repeat the one that worked.