I like dumplings, and your Pelmeni soup reminds me of Korean Mandu-guk.
Many years ago, I worked for a while at Gallaudet College (I think that very soon after it was designated a University) and it was very near a kind of market with lots of food vendors.
There was a little hole-in-the-wall Korean place there, where the elderly proprietor lady served me Mandu-guk - a dumpling soup. It was absolutely wonderful, and full of things I couldn’t identify, herbs that looked like little twigs, unusual mushrooms, etc.
Here is Maangchi doing a similar recipe (you don’t have to make your own Mandu to approximate this - there are lots of similar dumplings in supermarkets, now):
http://www.youtube.com/watch?v=FZEBKjqzVdI
Thanks for the link that looks good. My secret reason to have a thread about soups, could always use new recipes. :)