Brut is a term applied to the driest Champagne and sparkling wines. Brut wines are drier which means they contain less residual sugar than those labeled "extra dry." Extra Brut denotes a wine that's extremely dry, sometimes totally dry. Totally dry sparkling wines (those that aren't sweetened with a little dosage) are also sometimes called Brut Nature or Brut Integral.
Here is a chart on dryness levels:
| Level of Dryness |
Amount of residual sugar per litre |
| Extra Brut |
0.6% |
|
| Brut |
1.5% |
| Extra Dry |
1.2 - 2.0% |
| Sec |
1.7 - 3.5% |
| Demi-Sec |
3.3 5.0% |
| Doux |
5% + |
|
