Jack Daniel's is a world-famous Tennessee whisky brand known for its iconic square bottle and distinctive charcoal mellowing process (Lincoln County Process) that gives it a smoother taste, making it the best-selling American whisky in the world. It is produced by Brown-Forman at America's oldest registered distillery in Lynchburg, TN. Its flagship is the Old No. 7 Black Label, but popular varieties include Honey, Fire, and Gentleman Jack, which can be sipped neat, on the rocks, or mixed with soda.