Gentleman Jack Rare Tennessee Whiskey Miniature - 5cl Gentleman Jack rare Tennessee whiskey, from the makers of Jack Daniel's. This whiskey is a much more mellower style of Jack Daniel's whiskey, this is due to the fact that the production process calls for the whiskey to be twice charcoal-mellowed. The first time is before maturation and the second being after. This is a full-bodied whiskey with plenty of rich fruit and mixed spices.