The standard cognac barrel now holds 350 l/92 gal, although in 1900 it held only about 275 l/73 gal, and only 200 l/53 gal before the French Revolution. Cognac coopers make a wide range of different barrels for various wine regions.
ยฉ Jancis Robinson and Oxford University Press 1994, 1999, 2006, 2015