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 Shipwreck full of Champagne found in Baltic Sea The first vines taking root in Burkina Faso Frost damage in German vineyards to cost millions Taiwanese billionaire Wood Chen linked to fake wine scandal Walls: Roussillon’s old vines are its best drought defence