Wine Blends and Cuvées: Why Most Fine Wine Is Blended

Nearly every bottle worth bidding on is a blend. Bordeaux is a blend, Champagne is a blend, Châteauneuf-du-Pape may legally draw on thirteen grapes, and Port is made from a list of over a hundred sanctioned varieties. The single-variety bottle is the exception at the top of the market, not the rule.

A wine blend is a wine built from more than one grape variety, more than one parcel, more than one year, or all three at once. Blending happens in two places. In the vineyard, where varieties grow interplanted and are picked together, which we define as "a wine that is produced from two or more different grape varieties interplanted in the same vineyard". Or in the cellar, where each lot ferments separately and tasting decides the proportions afterwards. That second method is how almost all modern fine wine is made. A cuvée is the assembled result, and in Champagne alone the word carries a legal measurement: the first 2,050 litres pressed from a 4,000 kg marc. Everywhere else it guarantees nothing. The practical consequence for a buyer is that the recipe is the product. Change the proportions and you change the wine, its ageing curve and its price.

What is a wine blend, and where does the blending happen?

Two different operations get called blending, and they sit at opposite ends of production.

The old one is the field blend. Ridge Vineyards describes its Lytton Springs vineyard in Sonoma County, planted between 1900 and 1905, as "a traditional field blend of about seventy percent Zinfandel, twenty percent Petite Sirah, and ten percent Grenache and Carignan". grapes of different varieties are "planted, harvested and vinified together". The practice retreated for a mundane reason. The practical point is blunt: "fermentation tanks are now cheap enough that the field blend is an anachronism, and almost all wines are assembled by blending from smaller, individual lots."

The modern one is assemblage. Every parcel and every variety ferments in its own vessel, then the winemaker tastes through dozens of lots and sets the proportions. That decision is the wine. It is also the moment the winemaker leaves a weak parcel out, which is the entire commercial logic of second labels. If you want the two approaches side by side, start with the field blend guide and then single varietal vs blend.

What does cuvée actually mean?

In Champagne it is a volume. Everywhere else it is a word on a label.

Champagne's pressing rules turn cuvée into a number. "In Champagne, the cuvée is the first 2,050 litres of grape juice from 4,000 kg of grapes (a marc ), while the following 500 litres are known as the taille (tail." Its Champagne region entry gives the same split with the ceiling attached: around 4,000 kg of grapes may be pressed to make up to 2,550 litres of juice, of which the first 2,050 are cuvée and the next 500 are taille. A second taille of 167 litres was allowed before 1992. The cuvée fraction is the cleanest juice. The taille carries more colour and phenolic weight and generally goes into wines built to drink early.

Outside Champagne the word has no legal content at all. The rule is clear: "Since the term cuvée for this purpose is unregulated, and most wines have been stored in a vat or tank at some stage of production, the presence of the word cuvée on a label of an arbitrary producer is no guarantee of superior quality." On a non-Champagne label, treat "cuvée" as decoration until the back label tells you what is in the bottle. The cuvée meaning guide takes the term apart in full.

Which blends do you actually need to know?

Six recipes cover most of what trades at auction, and each exists for a different reason.

Blend	What the rules allow	What it usually is
Bordeaux red	Cabernet Sauvignon, Cabernet Franc, Merlot, Petit Verdot, Malbec and Carménère. Four more were authorised in July 2019 against climate change, Marselan, Touriga Nacional, Castets and Arinarnoa, but only for wines labelled Bordeaux or Bordeaux Supérieur	Left bank around "70% Cabernet Sauvignon, 15% Cabernet Franc and 15% Merlot"; right bank around "70% Merlot, 15% Cabernet Franc and 15% Cabernet Sauvignon"
White Bordeaux	Sémillon, Sauvignon Blanc and Muscadelle do the work, with Sauvignon gris, Ugni blanc and Colombard also permitted	Typically "80% Sémillon and 20% Sauvignon blanc"
Châteauneuf-du-Pape	Thirteen varieties for both reds and whites: Grenache, Syrah, Mourvèdre, Cinsault, Clairette, Vaccarèse, Bourboulenc, Roussanne, Counoise, Muscardin, Picpoul, Picardan, Terret noir	Grenache-dominant. The appellation's own federation calls it the first French wine AOC, in 1936
GSM	Grenache, Syrah and Mourvèdre, a shorthand borrowed from the southern Rhône	Now made in South Australia, Paso Robles and Washington's Columbia Valley
Champagne	Seven varieties under the 2010 appellation rules: Arbane, Chardonnay, Petit Meslier, Pinot blanc, Pinot gris, Pinot meunier and Pinot noir	Three grapes do nearly all the work. Arbane, Petit Meslier and Pinot blanc together account for 0.02% of vines planted
Rioja red	At least 95% from Tempranillo, Garnacha tinta, Graciano, Mazuelo and Maturana tinta for destemmed fruit, at least 85% for whole grapes	Tempranillo-led. Maturana tinta arrived in 2007, when Rioja's Regulating Council added varieties for the first time since 1925

Two more are worth holding in mind. Port draws on more than a hundred sanctioned castas, but "only five ( Tinta Barroca, Tinto Cão, Tinta Roriz ( Tempranillo ), Touriga Francesa, and Touriga Nacional ) are widely cultivated and used". Chianti is Sangiovese-led. Chianti Classico banned white grapes outright: "Since 2006, the use of white grape varieties such as Malvasia and Trebbiano have been prohibited in Chianti Classico."

For the estate-level detail, the Bordeaux blend guide covers the five grapes and who leans on which, GSM covers the Rhône trio, and the thirteen Châteauneuf grapes covers the longest legal list in France.

Why do producers blend at all?

Because varieties ripen on different dates, vintages behave differently, and a house style has to survive both.

Bordeaux shows the first reason in its planting figures. The list includes the red vineyard as Merlot 62% by area, Cabernet Sauvignon 25% and Cabernet Franc 12%. Merlot ripens earlier and suits the cooler, damper clay of the right bank. Cabernet Sauvignon ripens late and needs the gravel of the Médoc. An estate that planted one grape only would be betting its entire crop on a single fortnight of weather.

Champagne shows the second. We describe non-vintage blending like this: "Most of the base will be from a single year vintage with producers blending anywhere from 10 to 15% (even as high as 40%) of wine from older vintages", and notes that the rules allow "at least 20% of the harvest from each vintage to be reserved for use in non-vintage Champagne". Krug Grande Cuvée runs that logic to its limit: It is "a blend of over 120 wines" from "ten or more different vintages", some "up to fifteen years in age", with at least six of the roughly twenty years behind each bottle spent in Krug's cellars.

The counter-example proves the same point. We describe Dom Pérignon as "always a vintage champagne, meaning that all grapes used to make the wine were harvested in the same year". It is still a blend, just not across years.

How much of the named grape is in the bottle?

Less than the label implies, and the threshold changes with the market you buy in.

In the EU, and in the retained law that still governs labels in Great Britain, Article 50 of Commission Delegated Regulation 2019/33 sets the bar for naming one variety: "at least 85 % of the product must have been made from that variety." Name two or more and the standard tightens to "100 % of the product concerned", listed in descending order of proportion and in characters of the same size. Amendments made in 2023, recorded on the same Article 50 text, cut that multi-variety figure to at least 95% in England, Scotland and Wales.

The United States is looser. Under 27 CFR 4.23, a varietal name may be used when "not less than 75 percent of the wine is derived from grapes of that variety", dropping to 51% for Vitis labrusca varieties, and only if the wine also carries an appellation of origin.

The vintage year works the same way. Article 49 of the same regulation requires only that "at least 85 % of the grapes used to make those products have been harvested in the year in question". So a bottle labelled with a single grape and a single year can lawfully hold a quarter of something else in the United States, and 15% of another year almost anywhere. Champagne is the strict exception: 100% of the grapes must come from the stated vintage year.

Does the blend change from vintage to vintage?

Every year, and at the top of the market the swing is large enough to change the wine's character.

Dom Pérignon is the clearest published case. It is "always an assemblage of Pinot noir and Chardonnay grapes, although the final composition changes every vintage: at times a blend in perfectly equal proportions (e.g. 1990 Rosé), at times up to 60% Chardonnay (1982) or 60% Pinot noir (1969)." The label never changes. The wine inside swings from Chardonnay-led to Pinot noir-led depending on the year.

Bordeaux moves for harder reasons. Frost hits early-budding Merlot before it touches Cabernet Sauvignon, and rot at harvest lands on whichever variety was still hanging. The blend that reaches the bottle is a record of what survived, which is why two vintages from one estate can taste less alike than two estates from one vintage.

Does a blend age differently from a single variety?

Its components mature at different speeds, so the drink window is not the average of its parts.

Cabernet Sauvignon's tannin outlives Merlot's fruit, which is why a Médoc blend holds its shape for decades while its earlier-ripening component is already soft. In Champagne the clock rather than the grape governs the same principle: Vintage Champagne must age a minimum of three years while non-vintage requires 15 months, at least 12 of them on lees. The house stretches that out, with a first release after "8-9 years of lees ageing" and a second, P2, "released after 15 to 20 years lees ageing".

None of that tells you when to open the bottle in front of you. That is a per-vintage question, and it is the one we answer with data rather than with a rule of thumb.

Once the bottle is in your cellar rather than in a catalogue, drink-now is the faster route to the same answer.

What the blend does to what you pay

It sets the ceiling before scarcity does. A single-parcel bottling and a house blend drawn from many growers across many villages are different assets, and the market prices them as such.

The market index shows the same wines undifferentiated by composition, which is the comparison that makes the blend premium visible, and the Bordeaux atlas and Rhône atlas show which estates sit on the parcels that command it.

Score the wine that is actually in the bottle

Critics write about one vintage of one blend, and the market then quotes their scores for years as though they described the label. Our score does not work that way. It is 40% critic and 60% CellarTracker, so it carries what thousands of drinkers found when they opened the bottle alongside what the critic found when it was young, and it moves as a blend matures rather than freezing at release.

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