Traveling to Frankfurt, Triere and Luxumbourg - dining and food related recommendations welcome.

Sauekraut risotto can be very good actually; it was my grandma's signature dish. Unless you just really dislike sauerkraut in general, give it a try.

Adofph Wagner's is is the quintessential Hessian pub, right on the main street in Sachsenhausen, a suburb of Frankfurt, on the other side of the river. The sector is also where all of the museums are -- one or two of them have some very good cafes. It's a bit of a hike over the bridge from the Dom area, but very close to the Metro.
The place is packed with locals. I went often the two years I lived in the city. The one thing I didn't care for on the menu - the apfelwein -- a taste I never acquired. This is not fine cuisine. Web Site: http://www.apfelwein-wagner.com/

if i were you, i would do some posting on www.chowhound.com on the boards for that area. check it out. and what about google?