Sec in Still Wine
For still wines, sec straightforwardly means dry — a wine where fermentation has consumed virtually all the grape sugar. Most white wines from the Loire Valley (Muscadet, Sancerre, Vouvray Sec), Alsace, and Burgundy labelled "sec" contain less than 4 g/L residual sugar. This is the driest category for still wine in French wine classification.
Sec in Champagne and Sparkling Wine
The Champagne sweetness scale inverts expectations:
- Brut Nature (0-3 g/L) is the driest
- Brut (0-12 g/L) is dry
- Extra Sec / Extra Dry (12-17 g/L) is off-dry
- Sec (17-32 g/L) is medium-sweet
- Demi-Sec (32-50 g/L) is sweet
- Doux (50+ g/L) is very sweet
This anomaly dates to the 19th century, when most Champagne contained 100-150 g/L sugar. At the time, "sec" truly was the drier end of the spectrum. As tastes evolved toward drier styles, the Brut category was created, but the older terminology persisted.
Vouvray: A Case Study
Vouvray, made from Chenin Blanc in the Loire Valley, illustrates the full sec spectrum. Producers may label their wines Sec (dry), Demi-Sec (off-dry to semi-sweet), Moelleux (sweet), or Doux (lusciously sweet), depending on the vintage and residual sugar. A great Vouvray Sec offers electric acidity, stone-fruit purity, and remarkable aging potential.
Practical Guidance
When selecting French wines, "sec" on a still wine label reliably indicates a dry style. On Champagne or sparkling wine, however, "sec" means noticeably sweet — choose Brut or Extra Brut if you prefer a dry sparkler.