Martell Blue Swift VSOP Eau de Vie based on

Here comes Martell Blue Swift. VSOP Cognac aged in Bourbon Casks, and that's why it's called Eau de Vie de Vin because it's not a Cognac technically. This liquor was matured in French Oak casks and then finished in Kentucky Bourbon casks. Martell’s signature process of distilling cognacs free of impurities leave it open to absorbing the rich aromatic tones from the bourbon cask. The "Swift", has been a brand icon for Martell, a bird with the rare ability to fly for days without stopping, the Swift is bound by nothing – traversing oceans and continent. 

Disclaimer: Even when it says "Cognac Age" below, of course it should be "Age" from a legal point of view, because it's not a Cognac.