A Toast to Canadian SparkingWines

Yeast is a key component in wine creation. It’s the organism that converts a grape’s sugar into alcohol, and sparkling wines—champagne, Prosecco, cava—often get a double dose of the lively stuff.

You might be wondering how the bubbles in sparkling drinks are created. In the case of commercial beers and soda pop, carbon dioxide gas is added to the bottled beverage. With wines, carbon dioxide is a byproduct of fermentation, and when it’s trapped, it results in those lovely bubbles. This is how yeast works to make breads rise too: It eats