Which grape is Merlot often blended with to enhance its structure?

Merlot is often blended with Cabernet Sauvignon to enhance its structure due to the different characteristics each grape brings to the blend. Cabernet Sauvignon typically has higher acidity, more tannins, and a robust flavor profile, while Merlot is usually softer, with lower tannins and a fruit-forward profile. The blending of these two grapes allows winemakers to achieve a more balanced wine, combining the richness and smoothness of Merlot with the depth and structure of Cabernet Sauvignon. This synergy often leads to wines with a fuller body, greater complexity, and improved aging potential.