![]() ![]() While wild yeasts are praised for their ability to add unique flavors to wine, they are unpredictable and can lead to spoilage. Cultured yeasts are created by winemakers in a lab. Wild yeasts (or native yeasts) are found on the fruit or from around the vineyard. However, there are thousands of types of yeasts to choose from, all of which have different strengths and weaknesses. The Importance of Yeast in Wine FermentationĪs we’ve mentioned, yeast is a key component in wine fermentation. These methods have been developed over centuries, all in order to give you that perfect glass at the end of a long day. It really is quite complicated chemistry. It’s knowledge like this that helps shine a light on the incredible process of winemaking. Esters, for instance, are known for their ability to make wine taste citrusy and floral, while norisoprenoids help to give Chardonnay some of its more spicy notes. ![]() When winemakers use the fermentation process to convert their grapes to wine, they also produce a whole host of other complex compounds, which help to make wine, well, wine!Īll of these complex compounds help to give your favorite wines their iconic flavors and aromas. In fact, this incredible process also helps to shape the flavor, aroma, and look of the wine. However, fermentation doesn’t just create alcohol. These yeasts convert the natural sugars of the grapes into ethanol and carbon dioxide (which is a byproduct that gets released into the atmosphere and isn’t important for the wine). įor the wine to ferment, winemakers add yeast to the grape juice. This is what gives red wine such high tannins. While white wine is created by just fermenting grape juice, red wine is made using the whole grape, grape skins and all. Simply put, fermentation in winemaking is what converts grapes into alcohol. ![]()
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