The PDO zone of Mavrodaphne of Patras was established in 1971 and pertains to the production of fortified red wines (vin de liqueur) made from the Mavrodaphne variety (at least 51%) and the Black Corinthian grape. PDO Mavrodaphne of Patras wines must be aged in oak barrels with a capacity of up to 1,000 liters for one year. For the designation Reserve (Selected), a two-year aging in barrel and one year in bottle is required; for the designation Vieille Reserve, two years in barrel, two years in bottle, and a total of five years aging is necessary. Finally, for the designation Grand Reserve (Specially Selected), at least three years in barrel, three years in bottle, and a total aging of seven years are required.
Organoleptically, PDO Mavrodaphne of Patras wines are characterized by a deep red color with garnet reflections, aromas of black dried fruits, raisins, caramel, sweet spices, a rich body, moderate acidity, and a long, intense finish.