Mousseux refers to a type of sparkling wine that is characterized by its effervescence, or bubbles. This wine is produced through fermentation, which creates carbon dioxide that gets trapped in the liquid, resulting in a fizzy texture. Mousseux can be made from various grape varieties and is often enjoyed as an aperitif or during celebrations. There are different styles of Mousseux, including Champagne, which comes from the Champagne region of France, and other sparkling wines like Prosecco from Italy. The sweetness level can vary, ranging from dry to sweet, catering to different palates and preferences.