Champagne have been made for special occasions and people, the most notable example perhaps being the 20 fluid ounce / 60 cL. bottle (Imperial pint) made especially for Sir Winston Churchill by Pol Roger. In 2009, a bottle of 1825 Champagne was opened at a ceremony attended by 12 of the world's top wine tasters. This bottle was officially recognised by "Guinness World Records" as the oldest bottle of Champagne in the world. The contents were found to be drinkable, with notes of truffles and caramel in the taste. There are now only two other bottles from the 1825 vintage extant.
Sparkling wine production Champagne at least three years. The traditional method is used for Champagne, all European wines with the designation "Crémant", "Cava", better varieties of "Sekt" and other sparkling wines that have names such as "méthode classique" or "fermented in this bottle" on the label (note, however, that the unusual "ancestral" and "dioise" methods also ferment the wine exclusively in the bottle). The ancestral method () goes under many local names in the various French regions, such as "rurale", "artisanale" and "gaillacoise". This is by far the oldest method of making sparkling wine and preceded the "traditional method" by almost 200 years,