Sparkling wine is a wine with significant levels of carbon dioxide in it, making it fizzy. The best known example of a sparkling wine is champagne, which is exclusively produced in the Champagne region of France. Italy produces many sparkling wines, notably Prosecco; Spain produces Cava wines and in England production of sparkling wines is enjoying a resurgence. Usually sparkling wine is white or rosé but there are examples of red sparkling wines. The sweetness of sparkling wine can range from very dry "brut" styles to sweeter "doux" varieties (from the French words for 'raw' and 'sweet', respectively).
The sparkling quality of these wines comes from its carbon dioxide content and may be the result of natural fermentation, either in a bottle (as with the traditional method), or in a large tank (Charmat method) designed to withstand the pressures involved. Some regions permit simple carbon dioxide injection to achieve the desired affect.