Adakarası (Turkish: adakarası, “island’s black”) is one of the oldest known black grape varieties originated in Avşa Island on the Sea of Marmara. Although Its famous production place is Avşa Island but the grape variety of Adakara produces in all Marmara Region (especially Marmara coast and East Thrace). This thin skinned grape gives wines with medium tannin, high level of acidity and wines suitable for ageing. It is remarked by blackberry and cherry flavors. The wine has an alcohol ratio approximately 12%, and an acidity range of 6 to 7 grams/liter and this wine are also known as Avşa Wine. The Island of Avşa produce 1500 tonnes wine per a year.