Home Learn DOCa (Denominacin de origen calificada) Decanter Staff November 11, 2010 The highest quality wine designation in Spain. Rioja was the first DO to be promoted. Written by Latest Wine News A Spectacular Day at the 27th DFWE London Scotch producer claims Guinness World Record for ‘The Greatest Variety of Flavours in a Whisky’ French protests: Growers block motorway and hijack lorries containing Spanish wine Baudains: Are old vines important? Trump returns: The impact on the US wine industry