Strange German hot dog toppings

D enjoying his dog with some cheese that really looked like artificial marshmallows and some other toppings which I didn't bother to examine as it was a late night snack after a night out in Berlin. My hot dog which had lots and lots of onions, I think they were fried then roasted, which made them very crispy. My hot dog was also topped with cucumber, it was a good addition because I like cucumber, but very strange. Why sliced cucumber on top of a hot dog? And the crispy onions gave it such an odd texture.