The Champagne bottle
However, in the 18th century, controlling the effervescence was still a very hit-and-miss affair: lots of bottles broke, leading to considerable losses… People came to believe that this wine was the wine of the devil! Over time, realisation dawned that the bottle breakages were caused by excessive pressure in the bottle... Bottles made from thicker glass were therefore necessary, which could withstand such high pressure. Today’s Champagne bottles have been designed to withstand a pressure of 20 bar, which is three times the natural pressure of Champagne.
Improvements have also been made to the corking system over time: the wooden toggles ("broquelets") initially used to plug the bottles were gradually replaced with cork stoppers, thus preventing losses of pressure or wine.