What is Brut? 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% +