Croatian wine and winemaking has a very long tradition. The Greek settlers were the first to introduce vineyards along the Adriatic coast and islands back to 5th century BC.
Essentially there are two main wine-growing regions, the one along the coast ( Istria and Dalmatia - Mediterranean) and the interior regions (Central Croatia and Slavonia).
Nowadays Croatia produces almost 700 kinds of wines, some of them are of excellent quality. In Croatia there is a habit of diluting wines. If you ask for bevanda (red wine) in Dalmatia, they will serve you a glass of wine diluted with water usually 70% wine and 30% water. In the northern parts of Croatia is called gemist (white wine) usually diluted with mineral water.
Wines of interior regions
First and most popular of all whites is Grasevina, Croatian term for Welschriesling/Riesling Italico . Other notable white wines in the region are Rhein Riesling, Pinot Blanc, Pinot Gris, Chardonnay. Among the inland red wines, there are Frankovka (Blaufrankisch), Zweigelt and Pinot Noir as the three most well-known sorts.
The coastal and islands wines
The most popular coastal white wines are Istria’s Malvazija and Dalmatia Posip. Posip is unofficially considered the best white Croatian wine. My favorite white wine is Bogdanusa, cultivated in the area of Stari Grad and Jelsa on the island of Hvar. It is worth mentioning that Bogdanusa is an autochthonous sort, which can grow exclusively on this island.
There is other unique sort that is worth trying - Dalmatia Prosecco ( it has nothing to do with Italian Prosecco), sparkling wine comes from Bogdanusa, a white grape, sweet dessert wine made of dried grapes.
Among the coastal red wines there are several exquisite sorts that you should definitively test. The red Plavac Mali grape produces the best red wine. The two most valued Plavac wines are Dingac and Postup. I also recommend the Babic of Sibenik-Skradin vineyards, balanced and elegant, not sour, not sweet, perfect ruby-red dry wine.