Boissonnet explained that in France, cognac is enjoyed “very plain ... I tried three variations of Hennessy (VSOP, VS and XO), and the earliest of the three was first produced in 1817.
Tasting Table on MSN1y
9 Types Of Cognac, Explained
The official classifications are VS, VSOP, XO, and XXO ... One of the most well-loved examples of a VS cognac is Hennessy VS.