Merlot

The story

Merlot's parentage was resolved only in 2009: Cabernet Franc is the father, and the 'missing link' mother is Magdeleine Noire des Charentes — a variety so nearly extinct that its sole known vine was rediscovered by François-Xavier Perrin at Saint-Suliac, Brittany, in 1992, with four more found scattered across Charentes villages between 2004 and 2008. The grape's documented history is short: first named in print, as 'Merlau,' by F. Destoing in 1784 Libourne-region archives ('Merlau makes a black and excellent wine'), and appearing in Paris's Jardin du Luxembourg in 1789 as 'Bigney rouge.' Pomerol already grew it by 1761 (a Fontemoing procès-verbal lists it, alongside cot and bouchet, among the region's red grapes), but Merlot only became Pomerol's dominant variety after phylloxera, when grafting 'regularised' its production and Corrèze-immigrant négociants built the Libourne-Paris rail trade that made the wine famous. That transformation produced two proof-of-concept wines: Château Pétrus, near-monovarietal Merlot since 2010 and consolidated under Jean-Pierre Moueix by 1964 (the exact 1940s chronology of Madame Loubat's ownership is contested across four conflicting sources); and Le Pin, a single Pomerol hectare Jacques Thienpont bought for 1 million francs in 1979 and planted 100% Merlot — arguably the first 'vin de garage,' a decade before the term existed.

Insider story

In 1986, facing a red-wine glut, Ticino enologist Adriano Petralli proposed something reported as 'a world first': vinifying red-skinned Merlot as a white wine. It caught on — over 30% of the Swiss canton's Merlot crop is now made white, a genuine style distinct from the pink 'White Merlot' blush wine familiar in the US. That same year, 1986, Ornellaia's first Bolgheri Merlot harvest was so promising it was bottled alone — but simply labelled 'Merlot'; only the next vintage did it become 'Masseto,' now among Italy's most collectible wines (Frescobaldi-owned since 2005, a Wine Spectator 100-point score in 2001, first Italian wine sold via Bordeaux's Place de Bordeaux system in 2006). Bordeaux's classifications are less fixed than reputation suggests: in 2021-22, Angélus, Cheval Blanc, Ausone and La Gaffelière all withdrew from Saint-Émilion's reclassification rather than compete on criteria they said had drifted toward marketing and wine tourism — echoing a 2006 revision a French court fully invalidated in 2008. And in communist Yugoslavia, the small family-run Movia estate in Goriška Brda was, by 1958, the exclusive wine supplier for state leaders' official protocol.

Technical deep dive

Merlot buds early — raising spring-frost risk (a contributing factor in the catastrophic Bordeaux frost of February 1956) — while ripening runs medium-to-late; in Franconia it ripens around the same time as, or slightly after, Silvaner. Growth is strong and upright, needing active canopy management, and the vine is very productive with a marked tendency to over-crop if unchecked — exactly why Saint-Émilion (53 hl/ha) and Pomerol (49 hl/ha) cap yields below general Bordeaux norms. Downy-mildew resistance is only medium, and the vine shows a pronounced coulure/berry-shrivel tendency and rapid acid decline near ripeness. It wants deep, water-retentive soil — a preference borne out independently by Pomerol's clay-gravel, Le Pin's clay-gravel/sand-gravel-with-iron, and Masseto's clay hill, three unrelated regions converging on the same soil type across three languages. Vinification is standard red technique except in Ticino, where minimal skin contact produces a genuine white wine from the red grape, not a saignée rosé. On the palate: medium ruby to deep garnet, paler than Cabernet Sauvignon owing to thinner skins; plum- and black-cherry-led fruit, oak-derived vanilla/mocha/clove where barrel-aged; medium acid and medium tannin, softer and rounder than Cabernet Sauvignon's; medium-to-full body; medium-plus to high alcohol. Saint-Émilion sets a HIGHER minimum ripeness for Merlot specifically — 194 g/L must-sugar versus 180 g/L for its other permitted varieties — and while Saint-Émilion releases from 31 March post-harvest, neighbouring Pomerol requires ageing to 1 November, seven months later.

Industry secrets

Appellation rules reveal Merlot's legal peculiarities: neither Saint-Émilion nor Pomerol sets a minimum percentage for Merlot despite it being the 'très largement majoritaire' (very largely dominant) grape in both — the dominance is a fact about plantings, not a legal floor. Saint-Émilion permits Carménère as a principal variety; Pomerol explicitly does not, and calls Malbec 'pressac' locally. Rioja bans Merlot outright despite its ubiquity elsewhere in Spain (8,700 ha in 2004 growing to 13,325 ha by 2008) — producers have lobbied unsuccessfully to blend it with Tempranillo there. Germany's total red-variety area fell 2.5% in 2025, yet Merlot grew anyway (933 ha in 2023 to 981 ha in 2025), reaching the country's 'top ten' red varieties, concentrated in Pfalz and Rheinhessen rather than Baden despite reputation. Slovenia's Priloga 2 planting law permits Merlot even in Kras, home of 100%-Refošk Teran, and in Podravje/Posavje, wine countries entirely outside the Primorska coastal belt usually associated with it. On the market side: despite Pétrus and Le Pin being textbook blue-chip fine wine, no single auction lot, hammer price, or price-trend figure could be independently sourced for either — a genuine gap, not evidence of no market. The one hard price point found: Le Pin's primary-market release is reported around €2,500 HT per bottle, undated and single-sourced.

For collectors

More red grapes

• Merseguera
• Molinara
• Mondeuse
• Monica
• Montepulciano