Fireball Cinnamon Whisky is a cinnamon-flavoured whisky-based liqueur 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%.
According to the official Fireball website, the product was developed in Canada in the mid-1980s, and for a long time was little known outside of Canada.