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.
David, its a bit semantic. One could read the cahier des charges as stipulating that the rebeche falls between 0-10%, meaning that something must be discarded, however small. Either way, 10% or less is probably what you need to know.