I just remembered that this is the guy who pronounces Afghanistan "Afgafistan". He said something about having it at a train station, or close to one.
So I just called him. He says he called it knoodles, and was available at most any guest house. He was all over Germany, but did mention Bavaria.
The Swabian Maultaschen sounds good, but there is no vinegar in it. I see the recipe for Swabian Potato Salad does have vinegar.
And Uwe, I thought you would have the answer right off the top of your head, without having to search. Thanks for the info. I'm going to have bratwurst for lunch.