The Coffey Grain (the Coffey is the name of the continuous stills patented by Aneas Coffey still so this release has nothing to do any misspelled flavoring) is a grain whiskey. Nikka has been operating two sets of Coffey stills since the 1960s.Nikka Coffey Grain comes from the aforementioned Coffey stills, while other particulars come from its unorthodox status as a Japanese single grain.