Name a key characteristic of a St. Emilion wine.

St. Emilion wines are primarily known for their blends that typically consist of Merlot and Cabernet Franc. This region, located in Bordeaux, France, has the ideal climate and terroir for growing these grape varieties, which thrive in its sandy soils and cooler conditions. Merlot is often the dominant grape, providing rich fruit flavors and softness, while Cabernet Franc contributes floral notes and acidity, enhancing the overall complexity and balance of the wine.

The other options do not accurately reflect the characteristics of St. Emilion. For example, Sauvignon Blanc is more associated with white wines from Bordeaux and is not a key component of St. Emilion wines, which are predominantly red. While oak aging is common in many Bordeaux wines, it is not an inherent characteristic of St. Emilion wines; the focus is more on the varietals used in the blend. Grenache is a grape variety that is more typical in regions like the Southern Rhône and does not play a significant role in the red blends from St. Emilion.