If I ranked the STL 100 by the amount of time I’ve spent thinking about each restaurant, Balkan Treat Box would be No. 1 or 2. (I’ve also thought an awful lot about Vicia.) Loryn Feliciano-Nalic’s food truck entered regular service only last year and already has become an essential part of our restaurant scene thanks to its incredible versions of Bosnian cevapi and Turkish pide, a flatbread topped with ground beef, a blend of piknik and mozzarella cheeses, the red-pepper relish ajvar and creamy kajmak. Feliciano-Nalic bakes the pide and the ethereal somun bread that cradles the cevapi in the truck’s wood-fired oven, and not a little of the time I spend thinking about Balkan Treat Box is wondering how many more wonders she could produce from a bigger oven inside a traditional restaurant.