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Step-by-Step Tutorial
PRACTICAL WALKTHROUGH · PARAMETERS · COMMON MISTAKES
Cultivation of Aspergillus oryzae on steamed rice to produce enzymes for sake brewing.
Origin: Japanese (8th century) — Nara
See full technique reference →The process involves inoculating steamed rice at ~30 °C and 70–80 % relative humidity, allowing A. oryzae hyphae to secrete α‑ and glucoamylases that hydrolyze starch into fermentable sugars. Proteases liberate amino acids, while kojic acid contributes antioxidant properties, all of which enhance the umami profile of sake.
Primary Reaction
Hydrolysis of starch to glucose and maltose by α‑ and glucoamylases
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