The most important question....Does this type of business even works? any profits?
You can sell flowers/roses on busy street corners/traffic lights from a plastic container,it requires permit but im sure you can get away with it or afford the fine.I happen to know a guy in NY who took 100k a year doing that and even had people selling for him.Roses/flowers are a very popular thing in Poland.
I would stay away from food business as it is taken seriously and require major health regulations to be followed,and authorites will not blink an eye to enforce them.