Traditional Method
The "traditional method" is the process used to produce Champagne and other sparkling wines. It used to be known as the méthode Champenoise but the Champagne producers have successfully lobbied Brussels to restrict that term to wines from their region. Thus wines from elsewhere may not use "méthode Champenoise" when sold in the EU, and you will see "traditional method", "méthode traditionnelle" or the local language equivalent. Consumers outside the EU may still see "méthode Champenoise" on labels, but it is becoming less common.
After primary fermentation and bottling, a second alcoholic fermentation occurs in the bottle. This second fermentation is induced by adding several grams of yeast (usually Saccharomyces cerevisiae although each brand has its own secret recipe) and several grams of rock sugar.
At this time the wine bottle is capped with a crown cap. The bottle is then riddled (see below), so that the lees settles in the neck of the wine bottle. The neck is then frozen, and the cap removed. The pressure in the bottle forces out the lees, and the bottle is quickly corked to maintain the carbon dioxide in solution.


