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 New series fronted by Jermaine Stone pairs wine and food with hip-hop Champagne harvest 2023: A bumper crop Piedmont wine tour: Last places remaining and limited time offer