This is not traditional but it is one of the first 'fast foods' to appear in Poland and common throughout the country. Basically it is a halved baguette covered in meaty toppings and cheese and then heated to melt the cheese. To finish off lots of ketchup (Polish people love ketchup) and mayonnaise are added. The two shown in the picture are topped with ham and garlic, but toppings vary just like pizza (which is also very popular here). We had these in a cool wooden restaurant in Zielona Gora.
I was not overly impressed by these. It is not that original as I have often eaten melted cheese with toppings on French baguettes in England and the huge amount of sauce did not enhance the experience, it was rather sickly. But a good snack if your ravished, or as an inferior alternative to a kebab after drinking.