The origin of Vrbnička žlahtina, as the research studies agree, will remain secret. The world database of grape varieties contains the DNA data for the most of the world known sorts.

Žlahtina, the sort from Vrbnik, has been taken to analysis, but its DNA does not match with any known sort.
The adjective žlahtno in the Old Slavic language means noble and this authentic, unique and special sort, peeress of Vrbnik, has developed its qualities in the Vrbnik field.

An interesting fact is that Žlahtina is the best-selling bottled wine in Croatia. Almost a million bottles are sold every year.