The white grape variety originates from the border region Croatia/Slovenia. Synonyms are Debeli Klešec, Debeli Klešhic, Gelber Plavez, Plavac Zuti, Plavec, Plavec Rumeni, Plavec Sarga, Plavez Gelba, Plavez Giallo, Plavez Jaune and Rumeni Plavec. The parentage (parenthood) is unknown. In spite of apparently indicative synonyms or morphological similarity, it must not be confused with the Plavay variety. The vine is resistant to downy mildew. It produces acidic, alcohol-light white wines, which are very suitable for sparkling wine production. It is also used as a table grape. In Croatia it is cultivated around Zagreb on 13 hectares of vineyards. In Slovenia it is registered for PTP wine Cviček under the name Plavec Rumeni, which is common there, but no stock has been declared (Kym Anderson). The variety registered under the name Plavay with 60 hectares in Slovenia could be Plavec Zuti (confusion).