Red varietals are types of grape varieties specifically cultivated for making red wine. Common examples include Cabernet Sauvignon, Merlot, and Pinot Noir. Each varietal has unique characteristics, such as flavor profiles, aromas, and tannin levels, influenced by factors like climate, soil, and winemaking techniques. These grapes are typically fermented with their skins, which gives red wine its color and contributes to its complexity. The choice of varietal can significantly affect the wine's taste, making it essential for winemakers to select the right grapes for their desired style. Understanding red varietals helps wine enthusiasts appreciate the diversity of red wines available.