The grapes are harvested in the vineyard into 20-kg crates, and taken to the winery where they immediately undergo soft, delicate pressing. The resulting must is transferred into heat-conditioned tanks for static decantation. The clear must is then divided into two lots: one is left to ferment in stainless steel tanks at a low temperature (16-17 °C), while the other goes into barriques to ferment in underground cellars. When the wine in wood has finished its fermentation, it is left on the lees until spring. Then the two lots are blended. A second fermentation takes place in the bottle in May, following which the wine matures 72 months on its yeasts in the cool, dark surroundings of the cellar, in keeping with the strictest rules governing the production of Classic Method Sparkling Wine.