Juyondai Hizou Junmai Daiginjo Koshu is a limited release distinguished by its extended low-temperature maturation, showcasing a refined expression developed over time. Crafted by Takagi Shuzo in Yamagata Prefecture using premium Yamada Nishiki rice sourced from Hyogo Prefecture's Special A District, this rare expression is carefully preserved under the producer's proprietary ultra-low-temperature maturation process. The extended aging period, commonly based on approximately five years, allows the rice's character to evolve while maintaining balance, resulting in a smooth, rounded profile with the distinctive depth that defines the Hizou series.