Alcoholic: Try many different kinds of wines. Also worth trying is rakija, a type of brandy which can be made of plum šljivovica, grapes loza, figs smokovača and many other types of fruit and aromatic herbs. Pelinkovac is a bitter herbal liquor popular in Central Croatia, but is said to resemble cough-medicine in flavor. Famous Maraschino, a liquer flavored with Marasca cherries, which are grown around Zadar, Dalmatia. Non-alcoholic: Sometimes although very rarely you may find "sok od bazge" elderflower juice in the continental region. Worth trying! Also, in Istria there is a drink called "pašareta" and it is a sparkling red drink with herbal extracts. Very sweet and refreshing!In some parts of Istria especially south in local basements, you can try 'smrikva' - a non alcoholic refreshing drink made out of berries which grow on one sort of pine tree. The taste is a bit sour but very refreshing.
On a more general note, Croatia produces a broad palette of high quality wines up to 700 wines with protected geographic origin and brandies, fruit juices, beers and mineral water. On the coast people usually serve "bevanda" with meals. Bevanda is heavy, richly flavored red wine mixed with plain water. Its counter-part in northern parts of Croatia is "gemisht". This term designates dry, flavored wines mixed with mineral water.
Two most popular beers are "Karlovačko" and "Ožujsko", but "Velebitsko" and "Tomislav pivo" have received a semi-cult status in the recent years. It is served only in some places in Zagreb and Croatia.
Officially, alcoholic drinks can't be sold or served to anyone under 18. However, this rule is almost never enforced.