Another step on the sweetness-level scale associated with Champagne. Starting on the low end with brut zé́ro, the scale ascends to brut nature, extra brut, and brut sauvage (all of which are bone-dry), then brut (dry), extra dry (a hint of sweetness), sec (slightly sweet), demi-sec (moderately sweet), and doux (the sweetest of all). Why extra dry is sweeter than brut is a mystery to everyone but Francophiles. The only types of sparkling wine you're likely to see at the store are brut, extra dry, and demi-sec, of which brut is far and away the most popular. FYI, table wine that's slightly sweet is referred to as off-dry.