Champagne the wine was bottled before the initial fermentation had finished. Champagne did not use the "" until the 19th century, about 200 years after Merret documented the process. The 19th century saw an exponential growth in Champagne production, going from a regional production of 300,000 bottles a year in 1800 to 20 million bottles in 1850. In 2007, Champagne sales hit an all-time record of 338.7 million bottles. In the 19th century Champagne was noticeably sweeter than the Champagnes of today. The trend towards drier Champagne began when Perrier-Jouët decided not to sweeten his 1846 vintage before exporting it to
Bottle variation tasting younger than the same wine stored at a more typical 13 °C (55 °F). Finally, not all corks seal equally well, and a faulty cork will allow air into the bottle, oxidizing it prematurely. However, a corked wine would be described as a simple fault rather than bottle variation, even though the corked bottle would be clearly different from a non-corked example. Sometimes, it is not clear what causes the variation. Bottles stored together their entire lives, with no obvious faults, can taste completely different. Thus there is a saying, "There are no great old wines, only great bottles."