My grandmother was Lithuaian. She would make this soup many ,many, many years ago when I was sick. It took me a while but I finally found her recipe:
Grate peeled raw potatoes, drain off liquid. Add enough flour to potato pulp to hold form. Salt to taste. Form into small balls. Drop into boiling water. Boil 10 minutes and remove from water. In other pot scald milk, salt to taste and add a spoonful of butter. Then add potato balls and serve.
A couple of weeks ago I was sick and made this recipe - it was just as muy granny made it.
She had lots of interesting recipes that she brought over from the old country - Farina Pudding; Kugelis (a potatoe pudding); cottage cheese pancakes, cottage cheese squares, potatoe meat dumplings and a casserole made with noodles, bacon, onion, and cottage (or farmers) cheese.