Kyokai No. 1801
No.1801
Strain Number
No.1801
Type
Kyokai (協会酵母)
Origin
National Research Institute of Brewing
Aroma Profile
Same intense ethyl caproate profile as K-18 — apple, pear, and melon. Indistinguishable from K-18 in flavor and aroma output.
Fermentation Character
Foamless variant of K-18. Identical aroma production without foam formation, enabling larger batch sizes per tank.
About
The foamless (awa-nashi) derivative of K-18, combining extreme aromatic intensity with practical brewing convenience. Rapidly becoming one of the most popular yeasts for premium ginjo and daiginjo production, as it delivers K-18's extraordinary fruit aroma without the operational challenges of managing foam. Many breweries have switched entirely from K-18 to K-1801.