Which grape variety is particularly known for its high acidity and is commonly used in sparkling wines?

The grape variety known for its high acidity and commonly used in sparkling wines is Chardonnay. This grape is a key component in many of the world’s most famous sparkling wines, particularly Champagne, where its acidity contributes to the wine's freshness and aging potential. High acidity is essential in sparkling wine production, as it helps balance the natural sweetness from the dosage (sugar added after fermentation) and enhances the overall structure of the wine.

In addition to its acidity, Chardonnay is versatile and can express a wide range of flavors depending on its terroir and winemaking techniques. This makes it an ideal choice for both still and sparkling wines.

While Riesling and Sauvignon Blanc also exhibit high acidity, they are typically more associated with still wines, although Riesling can be used in some sparkling applications. Gewürztraminer, on the other hand, tends to have lower acidity and is more fragrant, focusing on floral and spicy notes rather than the crispness desired in sparkling wines. Thus, Chardonnay stands out as the quintessential grape variety for making sparkling wines with the necessary high acidity.