How is sparkling wine made?
First you catch a falling star and put it in your pocket. Or a Champagne producer makes a still, non-sparkling, wine in their house style from the three grape varieties permitted; Chardonnay, Pinot Noir and Pinot Meunier. A syrup of sugar and wine is added along with yeast. The wine is bottled in a champagne bottle and sealed, usually with a crown cap. As the yeast converts the sugars to alcohol the byproduct of carbon dioxide is trapped in solution creating the effervescence in the wine. There are several steps in finishing the wine but this is how bubbles are introduced to wine, which I think is what you’re asking.
