Where it is
Cava is a denomination (DO) rather than a single place, and can be made in several regions of Spain. Around 95 per cent comes from Catalonia, most of it from the Penedès near Sant Sadurní d'Anoia.
How it is made
The method is the same as in Champagne: a second fermentation in the bottle. Minimum ageing on the lees is nine months for basic Cava, with Reserva at 15 months and Gran Reserva at 30 months. Cava de Paraje Calificado comes from single sites and has its own rules.
Grapes and wines
The classic trio is Macabeo, Xarel·lo and Parellada. Chardonnay, Pinot Noir and others are allowed, and Garnacha and Monastrell can make rosé. Styles run from Brut Nature (no added sugar) to sweet.