Prosecco is an Italian sparkling wine made primarily from the Glera grape in northeastern Italy — primarily in the Veneto region but also in Friuli Venezia Giulia. It is the world's best-selling sparkling wine by volume, having overtaken Champagne in global sales around 2013 and growing steadily since. Over 600 million bottles are produced each year.
It is made by the Charmat method (also called the Martinotti method or tank method) — the wine undergoes its second fermentation in a pressurised stainless steel tank, not in the individual bottle as in Champagne. This produces a wine with a lighter, fruitier, fresher character than Champagne — lower in toast, yeast, and complexity, higher in fresh fruit, flowers, and approachability. It is typically drunk young.
Most Prosecco is sold as Spumante (fully sparkling, minimum 3 bar pressure) or Frizzante (lightly sparkling, 1.5 bar). A still version (Tranquillo) also exists but represents a very small fraction of production.