Short definition
A sparkling wine made entirely from white grapes, typically 100% Chardonnay in Champagne.
"White from whites" — meaning only white-skinned grapes went into this sparkling wine. In Champagne, that almost always means pure Chardonnay, though Pinot Blanc and other permitted varieties occasionally appear. The style is typically lighter, more citrus-driven, and more mineral than standard Champagne blends. It ages gracefully and works particularly well as an aperitif or with seafood.