This was 30 years ago, and I don't know if I'll be able to find the name of it. But we ran across a Biergarten during a long walk, maybe above the river (?), but walking distance of the cemetery where the U.S. military governor is buried.
Anyway, I liked that the building had a "Wiederaufbauen ... " plaque, regarding war damage. As we walked through the indoor foyer, we entered a not-so-huge, maybe 40' by 80' walled garden, where we had a little beer and a little hot food. There were Babushkas (sorry, I guess that's Omas) carving radishes or turnips into curlicue sculptures. i had the distinct feeling they were like guitar players in restaurants in Spain, because I had to pay them directly.
However, by the next day I was sick as a dog. My feeling was their raw food and un-gloved hands had to be the culprits. My wife didn't eat the radishes and didn't get sick. Just guessing though. It still counts as a "Rick Steves Moment."