The majority of the Saburomaru malt whiskey is made from bourbon barrels, as well as aged in Mizunara oak barrels and roasted barrels made at a local barrel workshop, resulting in a smoky, rich, yet sophisticated flavor. The grain whiskey is aged for over 12 years and then further aged in-house, gently enveloping the powerful flavor of the malt whiskey and creating a harmonious finale to "THE SUN," the pinnacle of Saburomaru Blended whiskey, where the multiple flavors combine and support each other.