Made in: The Champagne region of France
Along with the three specific grape varietals grown within the French region of Champagne, authentic champagne must be undergo the méthode champenoise - a second fermentation in the bottle.
Made in: The Catalonia region of Spain
Like champagne, cava undergoes in-bottle fermentation, though at lesser pressures. Spain's cava makers pioneered the use of the gyropalette, helping to remove yeast sediment from the bottle.
Made in: Nine provinces in Italy, most notably in the Veneto region
For the world's best-selling sparkling wine, grapes are fermented in stainless steel tanks. This makes prosecco less costly to produce and makes for lighter, frothier bubbles.
Made in: Portugal and Argentina
Though sparkling wines are produced throughout much of Portugal, the very best espumantes hail from the winemaking region of DOC Bairrada, to the south of Vinho Verde.
Made in: It’s complicated, but let’s say Germany and parts of Austria
As much as 90% of the grapes used in Sekt hail from Italy, France and Spain. In the homegrown all-German iteration called Deutscher sekt, the riesling grape takes center stage.
Made in: South Africa
Compared to the more temperate zones of Europe's top spots, the dramatically warmer winemaking region of South Africa makes for exceptionally fruit-forward, candy-like sparkling wines.
Made in: USA
Pricey champagne rivals from California and the Pacific Northwest use the méthode champenoise, while inexpensive "mixing" sparkling wines are made in large steel tanks via the Charmat method.