Wisconsin doesn't have good German food in general, but this place has some of the worst. My impression of that one severely overpriced jaegerschnitzel dish was a dried tiny piece of cutlet with surprisingly decent red cabbage and spaetzle that tasted like fried crickets from Mainland China. The liver dumpling soup's just one giant bland liver ball sitting in there and most of their other food items aren't that great, but you really shouldn't be there for the food anyway.
What's seriously redeeming about this place is the beer selection. I've had a couple European buddies of mine complain about the beer being watered down, but they have a decent selection. The atmosphere is seedy and the place can be a real dump (yes, it is dirty), but it's a fun place to take your friends on a birthday party just to laugh, drink (I've yet to try the boot), joke, and polka.
So basically no stars for the food and two stars overall because of a decent beer selection (watered down by a lot) and the fun kitschy atmosphere.