Jefferson’s Just Gave Its Bourbon a Major Upgrade

Jefferson’s is known for its bourbon experiments (some call them gimmicks), like aging barrels of whiskey at sea on container ships and giving very old whiskey a wine cask finish. The core whiskey portfolio is more about selecting and blending high-quality barrels into various expressions than taking chances, however, and the two main bourbons just got upgraded in terms of age and proof.

Jefferson’s was founded in 1997 by father and son team Chet and Trey Zoeller, both of…