Grill masters make the world's biggest "pljeskavica" burger at the Rostiljijada Barbecue Festival in Leskovac, Serbia, on Aug. 29, 2019. Grill masters from Serbia's southern city of Leskovac once again succeeded in beating their own record in world's biggest "pljeskavica" burger on Thursday at the annual Rostiljijada Barbecue Festival. In front of thousands of visitors at festival's main stage in downtown Leskovac, chefs of a local restaurant made "pljeskavica" burger out of 66.5 kilograms of meat -- three times bigger than the first one made 30 years ago at the first edition of the festival. (Photo by Nemanja Cabric/Xinhua)