My husband says his mother used to make a soup called, Lundabust, that's how it sounds. He can't remember how it's spelled. It had celery and veal in it. Then, at some point when the broth was clear, a beaten egg(s) was put in the broth.
He said his family made this on New Year's Day. They are of northern Italian and German heritage. His mom was German, but the Italian aunts made it, too. He hasn't had it since he was a child and I'd like to surprise him.
I talked with a Swiss friend of mine. He says this sounds like a liver dumpling soup which is traditional throughout Europe. He said you can google it and find variations. He also said many used liver which was leftover from other meals; just like we use our leftovers. Veal and other meats were used as substitutes also. Get the recipe and experiment until you find the right one which sparks that memory for your husband. What a great way to show how much you love him!