Ice cream is a necessary condition for the continuation of the human race in summer. While you can buy the usual packaged ices (Ledo, with its teddy bear logo, is the Croatian brand we grew up with), don’t miss the homemade version in a slastičarnica. The water and milk here is fine, so there should be nothing to upset your tum.
Slastičarnice are temples to all things sweet. You can also eat cake and drink coffee, soft drinks or a fitting choice of alcohol.