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 Bordeaux ‘Act for Change’ symposium Americans swindled in $13m wine investment scam Bordeaux 2021 en primeur campaign delivered ‘predictable chaos’ and ‘pitiful revenues’