One of the most popular street foods in Romania is Shaorma. They make it using chicken, beef or pork as meat. Usually you can find the best variation of vegetables in it. From pickled cucumber to onion, cabbage, fried potatoes, tomatoes and the list goes on. Sauces wouldn't be missing also, there's ketchup, mayonnaise, garlic sauce and sometimes mustard. Every vendor serves it with different things but most of the time you'll find it with more fries on the side or with a cup of soda.
Sper ca te-am ajutat. :)