Brut, Extra Brut, Demi-Sec: understanding champagne dosage

Every bottle of champagne ends its production with a "dosage": a small quantity of wine and sugar added before the final cork goes in. This tiny addition (sometimes as little as zero grams per litre) shapes the style of the wine, influences the perception of quality, and yet barely appears on the label. Knowing how to read it is one of the quickest ways to upgrade your champagne purchases.

What is dosage and why does it exist?

After the second fermentation in the bottle, which creates the bubbles, champagne undergoes riddling and disgorgement: the yeast sediment is removed, leaving a small empty space in the neck. The dosage (also called "liqueur d'expédition") fills that space. It is composed of reserve wine and a variable amount of cane sugar. Houses use it to balance acidity, round off the wine's profile, and define their house style.

The dosage scale: from zero to sweet

EU regulations define exact sugar thresholds that must appear on every label. From driest to sweetest:

• Extra Brut: 0–6 g/l. The driest style. Bone-dry, mineral, often with a pronounced acidity. Requires excellent base wines since the dosage cannot mask any flaw.
• Brut: 0–12 g/l. By far the most common style. Dry but with enough roundness to appeal broadly. When a label simply says "Brut", you are here.
• Extra Dry (Extra Sec): 12–17 g/l. Confusingly named: it is sweeter than Brut. Often found in Prosecco; rarer in champagne.
• Sec: 17–32 g/l. Medium sweetness, noticeably richer on the palate.
• Demi-Sec: 32–50 g/l. Perceptibly sweet, excellent with desserts and fruit-based dishes.
• Doux: above 50 g/l. Very sweet, now extremely rare.

A special case: Brut Nature and Zero Dosage

"Brut Nature", "Zero Dosage", "Non Dosé" and "Pas Dosé" all mean that no sugar was added at all: the sugar content is below 3 g/l coming purely from natural residual sugars. These are the purest expressions of the champagne, highly prized by sommeliers and collectors, and often (though not always) priced at a premium. They require exceptional harvest quality to balance their natural acidity without any sweetening.

Dosage, quality and price

There is no straightforward relationship between dosage level and price. A Zero Dosage champagne from a prestigious house will cost far more than a Demi-Sec from the same house, but the reason is the base wine quality, not the absence of sugar. Where dosage does affect your buying decision: if two bottles share the same house, same cuvée range and same vintage, but one is Brut and the other is Demi-Sec, the Brut is almost always priced higher because it targets a broader premium market.

Which dosage for which occasion?

• Aperitif / seafood: Extra Brut or Brut Nature. The acidity cuts through and the wine breathes.
• Throughout a meal: Brut. Versatile, pairs with most dishes.
• Cheese: Brut or Sec. The richness of cheese can take a touch more roundness.
• Dessert / fruit cake: Demi-Sec. The sweetness matches, preventing the wine from tasting thin.
• Gift (unknown palate): Brut. The safest choice, the most universally appreciated.