Behind every bottle of Champagne sit two very different worlds: the great houses that blend across the whole region, and the growers who make wine from their own vines. Here is how Champagne is actually made, what separates a grower from a grand house, and how to read it on the label. Notes from Service VTC Reims.
One wine, two philosophies
Champagne is a place, a method, and a business model all at once. The place is a strictly bounded region east of Paris. The method is the same for everyone, the painstaking process that turns still wine into a sparkling one in the bottle. Where producers part ways is the business model: some buy grapes from hundreds of growers and blend for a consistent house style, while others farm their own vines and bottle the character of a single village.
Neither is better in the absolute. Understanding the difference simply helps you taste with more pleasure, and choose the estates that match what you are looking for. Let us start with how the wine is made, because everything else follows from it.
How Champagne is made, step by step
Three grapes
Chardonnay for finesse, Pinot Noir for structure, and Meunier for fruit and roundness. Most Champagnes blend the three; a Blanc de Blancs is pure Chardonnay, a Blanc de Noirs pure black grapes.
Pressing and first fermentation
Grapes are pressed gently and quickly, then fermented into a dry, still base wine, sharp and unremarkable on its own. This is the raw material the winemaker will shape.
The blend (assemblage)
The decisive moment. The cellar master blends base wines from different grapes, villages and often different years, adding reserve wines from past harvests to build a consistent, balanced whole. This is where a house style is born.
Second fermentation in the bottle
A little yeast and sugar are added and the wine is bottled and capped. It ferments a second time inside that very bottle, and this is what creates the bubbles. This bottle fermentation is the heart of the Champagne method.
Ageing on the lees
The bottles rest in the cool chalk cellars for years, on their spent yeast, which gives Champagne its bread and brioche notes. The law sets a minimum, the best houses and growers go far beyond it.
Riddling, disgorgement, dosage
The bottles are gradually tilted so the sediment collects in the neck (riddling), the neck is frozen and the plug of sediment shot out (disgorgement), then a touch of wine and sugar is added (dosage) to set the final style, from bone-dry Brut Nature to richer Demi-Sec.
Grand house or grower, what really changes
The grand house
A house (a negociant) buys grapes from a vast network of growers and blends at scale for a signature style that tastes the same year after year. Think history, cathedral-like cellars, famous names and the reassurance of consistency.
The grower
A grower (a recoltant) farms their own vines and makes wine only from their own grapes, usually in one village or on one slope. Smaller volumes, a personal welcome, and wines that speak of a single terroir rather than a blended house style.
The trade-off
Houses offer polish, prestige and reliability; growers offer intimacy, terroir and, often, value. Many of the world's best Champagnes come from each camp. The real answer, for most visitors, is to taste one of each.
The two little letters that tell you who made it
Look for a tiny code, usually near the bottom of the label, and you will know the model behind the bottle. NM (negociant-manipulant) is a house that may buy grapes; almost all the famous names are NM. RM (recoltant-manipulant) is a grower making wine from their own vines. CM is a cooperative of growers, and RC a grower selling a cooperative's wine under their own label.
None of these codes is a mark of quality on its own, a great NM can outclass a dull RM and vice versa. But once you can read them, a wine list or a shelf tells you a richer story, and you can seek out the small growers that never reach the export shelves. If you would like to know which houses and growers to visit, our companion guide walks you through it: which Champagne houses to visit.
Taste the difference for yourself
The best way to understand grower and house is to visit both in a day. Every tour is private, chauffeur and logistics included; visits and tastings are paid on site.
Confidential Growers
Grower champagnes off the beaten track, where you taste with the person who made the wine.
Champagne Discovery Tour
A half-day introduction: one grand house and one grower, the difference in a single day.
Grape Varieties & Grand Crus
The three grapes and the classified villages, terroir made tangible.
Crayères UNESCO Tour
The chalk cellars where the wine ages on its lees, listed as World Heritage.
Avenue de Champagne
A day in Épernay among the grand houses along the world's most famous wine avenue.
All our tours
An overview of our Champagne tours and the houses we drive you to.
What travelers ask us about how Champagne is made
What do RM and NM mean on a Champagne label?
RM (recoltant-manipulant) is a grower who makes wine from their own vines. NM (negociant-manipulant) is a house that may buy grapes to blend, which covers almost all the famous names. CM is a growers' cooperative. The code sits in small print near the bottom of the label.
Is grower Champagne better than a grand house?
Neither is better as a rule, they are different. Growers offer intimacy, a single terroir and often better value; houses offer a consistent signature style, history and prestige. Excellent and disappointing wines exist in both camps, so the label code is a guide, not a verdict.
How is Champagne made, in short?
A dry still base wine is made from Chardonnay, Pinot Noir and Meunier, blended (the assemblage), then bottled with a little yeast and sugar for a second fermentation that creates the bubbles. It ages for years on its lees in chalk cellars, before riddling, disgorgement and a final dosage set the style.
What is the assemblage, or blend?
It is the art of combining base wines from different grapes, villages and vintages, including reserve wines from earlier years, into a balanced, consistent whole. It is the moment a cellar master defines the character of a Champagne, and the signature of a house.
Why is Champagne fermented in the bottle?
Because that second fermentation, sealed inside each individual bottle, traps the carbon dioxide as fine bubbles and builds the bready, complex flavours as the wine ages on its yeast. This bottle method is what legally and stylistically defines Champagne.
Can you take us to meet a grower?
Yes, that is one of our favorite days. We work with growers across the Montagne de Reims and the Marne valley and open doors that are not on public booking pages. See our Confidential Growers tour, private chauffeur included, tastings paid on site.