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Is the yeast starter truly necessary? This article explores the differences between Kimoto, Yamahai, and Sokujo, and traces the evolution of sake brewing up to starter-omitted methods. Understand the philosophy of sake production through the history of microbial control technology.

What is the difference between Kimoto, Yamahai, and Sokujo? This guide explains the yeast starter (shubo) from the perspective of how lactic acid is produced—comparing natural lactic acid cultivation and direct lactic acid addition. A clear and structured explanation of fermentation design, also useful for sake certification study.