Balzac is not a part of an alambic. It is a grape variety used for making cognac between roughly 1700 and 1800. It is a crossing between Gouais blanc and Chenin blanc. Wikipedia states that the variety was introduced in 1842, but I think that is a mistake. Balzac was already used around 1600, but after the very severe winter of 1709 the use of Balzac increased enormously, because the Gaumez grape – much in use until then – was insufficient resistent to low temperatures. After 1800 the Folle Blanche took over and after 1900 of course the Ugni blanc.
The Balzac grape variety is now extinct or nearly extinct.
Honoré the Balzac was a famous French writer of the 19th century, but not a politician.