Jefferson's Ocean Aged at Sea BourbonInspired by the original Jefferson's Ocean, which was new filled bourbon barrels, the Jeffersons Ocean: Aged at Sea takes older bourbon barrels and brings it around the world. Stopping in 5 different continents and crossing the equator 4 times, this bourbon truly is a world beater. What began as a fun experiment has resulted in a more scientific approach to the maturation process of bourbon. When whiskey was first distilled in Kentucky, it received