A contributing factor was Portugal's entry into the European Economic Community in 1986, which meant that the Port lodges' monopoly was abolished, thus paving the way for producers in the Douro valley to produce and bottle their own wine - Port or dry Douro wines.
En bidragande faktor var Portugals inträde i Europeiska ekonomiska gemenskapen 1986, som innebar att portvinshusens monopol avskaffades, och därigenom beredde vägen för producenter i Douros dalgång att producera och buteljera sina egna viner – portviner eller torra douroviner.