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Step-by-Step Tutorial
PRACTICAL WALKTHROUGH · PARAMETERS · COMMON MISTAKES
Sake is a Japanese rice wine produced through a two-stage fermentation process involving enzymatic saccharification by Aspergillus oryzae and alcoholic fermentation by Saccharomyces cerevisiae.
Origin: Japanese (8th century) — Japan
See full technique reference →During the koji stage, Aspergillus oryzae secretes amylases that hydrolyze amylopectin into fermentable sugars, primarily glucose. These sugars are then converted by Saccharomyces cerevisiae into ethanol and CO₂ under controlled temperature and pH. The process also generates amino acids and volatile esters that contribute to the beverage’s umami flavor profile.
Primary Reaction
Starch (amylopectin) → Glucose → Ethanol + CO₂
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Key Variables