a.k.a. Charmat Method, Metodo Italiano, Cuvée Close
Examples: Prosecco, Lambrusco
The major difference between the tank method and the champagne method is that the second fermentation happens in a large tank instead of individual bottles. During the second fermentation, the CO2 released from the fermentation causes the tank to pressurize, causing the bubbles in the sparkling wine. Afterward, wines are then filtered, dosed, and bottled without aging.
Tank method sparkling wines generally have a much more freshly made character. The process is more affordable than the Champagne method, with the savings often passed on to the consumer.