It reminds me of a pieróg which you could only buy on ul. Szewska in Krakow. That was when I was a kid, the place doesn't exist anymore.
It was different than pieróg lubelski, I guess, wrapped in dough cabbage and muchrooms. It was long for a half meter. And delicious.
I always was buying it on my way to the rynek
Maybe somebody remembers? Krakusy? Or it is totally forgotten? :(