I lived in Munich for about 8 months, 47 years ago. I found several German food items that I liked, but my two favorites were cheapies that you could get in any Bavarian Gasthaus:
1) Gulashzuppe -- obviously related to Hungarian Goulash, but a very different animal: a spicy, meaty red/brown soup that was a bit like chili. VERY flavorful, and would warm you up on a cold night.
2) German camembert -- quite different from the real French thing. Rubbery, less inclination to ripen, and a delicious flavor of its own.
I could get a bowl of zuppe, a wrapped Camembert, and a couple of semmels for about a buck. I found it all delicious and filling.
I was back in Southern Germany about 10 years ago and found similar Gulashzuppe (just as I remembered it) but I have never seen it, or a comparable Camembert, anywhere in the US. Can anyone suggest where to find these items?