The Charmat method (also called the "Italian Method") of producing sparkling wines is often used in the crafting of Prosecco.
How the Charmat Method Works
This method forces the second fermentation to happen in a large stainless steel tank prior to bottling, rather than in the bottle like the traditional méthode champenoise. The Charmat method is a cheaper means for pushing a wine through second fermentation and is best used on sparkling wines that are meant to be consumed young and relatively fresh.
Also Known As: Italian Method, Metodo Italiano or Martinotti-Charmat Method