Nikka Whisky Coffey Grain is a grain whisky, which is typically used for blending but rarely bottled on its own. The secret behind Nikka's grain whisky is the unique flavor generated by Coffey stills, which are traditional continuous stills patented by Aeneas Coffey in the 1830s. The rich corn and touch of honeyed citrus taste of Coffey Grain is also excellent in cocktails.