What makes the tiny bubbles gas in Sparkling wine.
The frothing bubbles in Sparkling wine are formed during the fermentation process at phase 2 of the winemaking process. This process is used by winemakers who extract the pure extract from phase 1 and then add a few grams of sugar, a few grams of yeast. This yeast and the carbon dioxide – CO2 conversion line produce the gas in the alcohol, creating the corresponding alcohol content so the bubbles bubble.
This phase 2 fermentation usually occurs after the wine is bottled, or it can also be done in the fermentation tank, depending on the preferred method chosen by the manufacturer.