Individually, these little pots are called 'džezva' and are used for making Turkish coffee. Many are on sale in Kalemegdan Park and around Belgrade. In some restaurants, Turkish coffee is served on a little tray with a small cup and an individual džezva , accompanied by a Turkish Delight.
Remember, the Turks occupied Yugoslavia/Serbia for 500 years. Long enough to drink lots of coffee.
See other reflections on James' WEEKEND REFLECTIONS.