Home Wine Grape Varieties Tinto Cao (red) Decanter Staff August 13, 2010 One of the rarest, high quality port grapes grown in the Douro Valley, highly prized for its spicy character. Written by Latest Wine News Bordeaux 2024: Branaire-Ducru ‘sets example’ before big second week Coravin World Wine Tour features elite restaurants and bars in eight countries Traces of ‘forever chemical’ TFA found in European wines Blind faith: Eliza Dumais on our obsession with tasting blind Michelin Guide Buenos Aires & Mendoza 2025: Winners revealed