Suntory Liquors Limited built a production facility for grain whisky on the Hakushu Distillery grounds in December 2010 with the aim of creating an even greater array of unblended whiskies. After conducting numerous production tests, the facility will begin full-scale operation in May 2013.

Grain whiskies are produced from cereals, such as corn, and distilled in a device called continuous still. They play a crucial role by forming the base of the flavor that enhances the character of a malt whisky at blending.

Suntory produces grain whisky at the Chita Distillery (Chita City, Aichi Prefecture), which belongs to the Group company, Sungrain Ltd. Although the Hakushu Grain Whisky Facility, which is set to begin full-scale operations, is approximately one-tenth the size of the Chita Distillery, it has production equipment capable of utilizing a variety of grains aside from corn to create various types of grain whiskies.

Suntory is taking up the challenge to create many different unblended whiskies so that in the future an array of products with new value can be offered.