It was definitely "Maultaschen"! Everywhere they were served, they were different but good!
.?? Maultaschen are just big ravioli. Very tasty, not strange.
Wasn't there a really long thread on this topic recently?
Maul Taschen are nothing more than big raviolis as already mentioned, with meat or veg inside, mostly served in some broth. Certainly not what I would call "strange".
I think this was the recent thread:
https://community.ricksteves.com/travel-forum/general-europe/weirdest-food-you-ve-eaten-in-europe