Hennesy is a type of cognac, a brandy made from grapes and aged in oak barrels.
It has a smooth and rich taste, with vanilla, caramel, and oak notes.
The taste can vary depending on the age of the cognac, with older cognacs having a more complex and refined flavor.
Some people also describe Hennesy as having a slight hint of fruit, such as orange or apricot.
Overall, the taste of Hennesy is often described as luxurious and sophisticated.