I wrote down pretty much everything I ate during my trip. Some highlights.
A slice of authentic Bled cream cake - don't be fooled by imitations (Park Restaurant and Cafe in Lake Bled, Slovenia).
Small plates at Male Madlane, a restaurant located in an apartment overlooking the Adriatic Sea (Rovinj, Croatia).
Plum dumplings (Brasov, Romania)
Covrigi - pretzels sprinkled with sesame or poppy seeds. There are places selling these everywhere Romania, along with gogosi, doughnuts stuffed with various sweet and savory fillings. Covrigi and gogosi stuffed with cheese were the mainstays of my diet in Romania (Gare du Nord, Bucharest, Romania).
Cheese wrapped in tree bark (Farmers' market in Sibiu, Romania).
Cheese burek with yogurt. I ate burek in every country and I ate it at least four times a week. This was the best (Buregdzinica Bosna Restaurant in Sarajevo, Bosnia and Herzegovina).
Popcorn and corn in a cup are available everywhere in Serbia and Bulgaria (Varna, Bulgaria).
There are coffee machines on every block in the Balkans and the coffee is surprisingly good
Shopska salad, the national dish of Bulgaria - feta-like cheese (and lots of it), tomatoes, cucumbers, and onions (Dayana Restaurant in Plovdiv, Bulgaria).
Fresh squeezed pomegranate juice (Goreme, Turkey)
Gozleme - pancakes filled with cheese (Nazar Borek and Cafe in Goreme, Turkey).
Katmer - griddled pastry filled with kaymak (similar to clotted cream) and sprinkled with pistachios (Serger Bakery in Istanbul, Turkey).
I first tried khachapuri, a pastry filled with white Georgian cheese, in Uzbekistan and I loved this version (Khachapuria Bakery in Jerusalem, Israel).
A wonderful meal of katayef - pancakes stuffed with white cheese or walnuts and cinnamon (Dewan al-Saraya Old City Abu Ashraf Restaurant in Nazareth, Israel)
Sabich - an absolutely fantastic sandwich invented in Israel. Lightly fried eggplant, chopped hardboiled eggs and all sorts of spreads and seasonings (near the Mahane Yehuda Market in Jerusalem, Israel).