What is the unique characteristic of "Genshu" sake?

Genshu sake is characterized by its undiluted nature, meaning it has not been mixed with any water post-fermentation. This results in a higher alcohol content, typically ranging from 18% to 20% ABV, compared to standard sake, which is usually diluted to around 15-16% ABV before bottling. The absence of dilution allows Genshu to retain a fuller flavor profile and a more robust body, distinguishing it from other types of sake that undergo dilution.

While it's worth noting that other sake types may involve processes like water dilution or pasteurization, Genshu stands out specifically due to its concentrated essence derived from the fermentation process without any added water. Its unique characteristics may appeal to enthusiasts looking for a more intense tasting experience.