Key styles by region
What makes Merlot distinctive
Merlot is the genetic offspring of Cabernet Franc and an ancient variety called Magdeleine Noire des Charentes. Its defining structural characteristic is relatively thin skin, which means lower tannin than Cabernet Sauvignon and a softer, more plush texture. This makes Merlot approachable younger and blendable in ways that harder varieties are not. In Bordeaux, Merlot forms the backbone of right-bank blends (Pomerol, Saint-Émilion) and plays a supporting softening role in the more Cabernet-dominant left bank.
Aromatically, Merlot is defined by red and black plum, black cherry, chocolate and mocha. With oak ageing, cedar, tobacco and vanilla emerge. In cooler vintages or higher-altitude sites, fresh herbs (bay, mint) are noticeable. The variety's higher natural sugar content compared to Cabernet Sauvignon means it reaches phenolic ripeness earlier — an advantage in cool climates — but can produce jammy, overblown wines if yields are not controlled or the site is too warm.
Merlot in Bordeaux blends
In left-bank Bordeaux (Médoc appellations: Pauillac, Saint-Julien, Margaux, Saint-Estèphe), Cabernet Sauvignon typically dominates the blend, with Merlot — usually 20–40% — added to soften tannin and add mid-palate flesh. On the right bank (Pomerol, Saint-Émilion), the clay and limestone soils suit Merlot better, and blends are often 70–100% Merlot with Cabernet Franc providing secondary structure. The classic Bordeaux blend is the template for many New World wines — particularly from California, Washington, Chile and Australia — often labelled as Meritage or simply as a proprietary blend. For how blending decisions shape wine structure, see the winemaking methods guides.
Sources: WSET (Merlot curriculum, Level 3), Jancis Robinson MW — Wine Grapes (2012), CIVB — Vins de Bordeaux, Decanter (Merlot regional guides), OIV (global planting statistics). Last updated: 2026-11-04. Corrections via the contact form.