Ｑ.Ｂ.Ｔ

Q B T is a modern branded expression from Iiyama Shuzo in northern Nagano, stepping outside the traditional naming conventions used by the brewery's other labels. While the abbreviation likely references a specific promotional or marketing concept, the sake itself is produced using Iiyama's cold mountain water and local brewing tradition. It represents the brewery's engagement with contemporary sake culture alongside its heritage lineup.