According to the Wine Law, wines in Bulgaria fall into the following categories:
1. 'RESERVE' CATEGORY This is a special category of wines aged in small oak casks with the purpose of extracting phenolic compounds from the wood, and then in larger oak casks. Reserve wines can be either of declared geographical origin, or of controlled appellation of origin.
2. WINES OF CONTROLLED APPELLATIONS OF ORIGIN (A.0.C.) These wines are made from grapes, originating from strictly defined and controlled micro-regional vineyards with a limited maximum yield of grapes per hectare and defined minimum sugar contents. These wines constitute about 2% of the total production of quality wines.
3. WINES OF DECLARED GEOGRAPHICAL ORIGIN (D.G.O.) These are wines made from selected grapes originating from a particular geographical region. Origin is declared by the producer. This category constitutes 70% of quality wines.
4. REGIONAL WINES, also called Country Wines. These wines possess the original properties of the grape varieties they are made from. Two varietal names can be mentioned on the label. They correspond to the category VIN DE PAYS (France) and LAND-WEINE (Germany). These wines constitute 18% of the total production of quality wines.
5. WINE WITHOUT DECLARED ORIGIN, but of declared variety or registered brand name. They constitute 5% of the total production of the quality wines.