Food / Packet soups recommended or not [32]

I am looking for a recipe that my grandmother always made. I am not even sure what the correct spelling. I am guessing at it so I hope someone can tell me. It was callled Faus? All I know was that it was a bit on the sour side and we used to put hungarian noodle in it. If anyone can help me I would greatly appreciate it very much. I live in Georgia and when we go to Ohio I make sure that I hit the Polish market for Kielbase and Pierogies.