The techniques of sparkling winemaking did not originate with the Benedictine monk Dom Pérignon, nor was the first purposely sparkling wine produced in the region of Champagne. Regardless, through centuries of refinement Champagne has become the world’s leading sparkling wine and the vinous embodiment of luxury and celebration.
I am also curious how do they filter the wines after disgorgement during the ancestral method? Aren't they losing the bubbles during this procedure? The Charmat I guess is under pressure! Any further reads about this.
With Charmat, yes, they are filtering under pressure. I'm not totally sure, but I'd imagine that there are bottling machines that help transfer the wine from bottle back to tank without too much loss of pressure. With ancestral method, there is a wide range of practices, some disgorged, some not, etc.