There are only four breweries that regularly supply sake for the Imperial household. Nihonsakari is one brewery to be so honored for over 100 years. This special sake called Souhana was permitted to be sold to the public for the first time in 1970.
This most superior sake has been used ever since by the Imperial family for important events such as the enthronement of Emperor Taisho and Showa; almost all weddings of the Imperial family; official welcome parties for state guests; and in 2019 the enthronement of the new Emperor of Japan.