What characteristic is common to the red wines of the Hermitage region?

The characteristic that is common to the red wines of the Hermitage region is that they are predominantly made from Syrah. Hermitage, located in the northern Rhône Valley of France, is renowned for its high-quality Syrah wines, which are known for their complexity, depth, and aging potential. Syrah thrives in the region's unique climate and terroir, resulting in wines that often exhibit dark fruit flavors, peppery spice, and hints of earthiness.

While high acidity might be a trait in some wines, it's not the defining feature of Hermitage reds, which can have balanced acidity. The region does not commonly produce sweet wines, as it's primarily known for its dry red styles. Additionally, carbonic maceration is not a typical winemaking technique for Hermitage; its red wines are usually made using traditional fermentation methods that highlight the characteristics of Syrah. Thus, the predominance of Syrah is the standout feature of Hermitage red wines.