Which statement accurately contrasts the traditional Champagne method with the Charmat method?

• A. Traditional uses bottle fermentation; Charmat uses tank fermentation.
• B. Traditional uses external CO2 injection; Charmat uses natural fermentation
• C. Traditional yields no sugar; Charmat yields high sugar
• D. Traditional uses red grapes; Charmat uses white grapes

Answer: (A)

The key idea here is where the secondary fermentation happens and how that choice shapes the wine. In the traditional Champagne method, the bubbles are created in the bottle itself — the base wine undergoes a second fermentation in each individual bottle, with the yeast and sugar sealed inside. This is why you go through riddling and disgorgement to remove the yeast from each bottle and often add a dosage to adjust sweetness. In the Charmat method, the second fermentation happens in large fermentation tanks, not in individual bottles, and the wine is bottled under pressure afterwards. This produces a fresher, usually lighter-bodied sparkling wine that preserves more fruity aromas.

So the statement that correctly contrasts the two methods is that the traditional method uses bottle fermentation while the Charmat method uses tank fermentation. The other statements don’t fit: external CO2 injection isn’t how either method works since both rely on fermentation to generate the CO2; traditional methods do involve sugar and yeast and sometimes dosage, so it’s not correct to say there’s no sugar; and while grape varieties matter, Champagne is traditionally made from white grapes and the comparison isn’t about red vs white grapes.