Fireball Cinnamon Whisky. Fireball Cinnamon Whisky is a mixture of whisky, cinnamon flavoring and sweeteners that is produced by the Sazerac Company. Its foundation is Canadian whisky, and the taste otherwise resembles the candy with a similar name, Ferrara Candy Company's Atomic Fireball candy. It is bottled at 33% alcohol by volume (66 U.S. proof).