Demi-Sec is the term used for sparkling wines that have between 32 and 50 grams per liter of residual sugar.
The official sweetness levels of champagne are:
- Doux (50+ g/L)
- Demi-sec (33–50 g/L)
- Sec (17–35 g/L)
- Extra-Sec (12–20 g/L)
- Brut (0–12 g/L)
- Extra Brut (0–6 g/L)
- Brut Nature/Zero (0–3 g/L).