This is the restaurant part of a rather large complex dedicated to brewing and distilling. The beer…read morecave tour (yes, it's a beer cave...with a rather interesting history behind it) was a particular highlight and our tour guide was excellent, informative, and had a dry sense of humor. Definitely worth it.
There's also a tasting room for their spirits nearby where, for a euro or two, you can try most of their spirits. The schwarzbier schnapps was particularly good.
At the restaurant, the house beers are solid, but do make sure to check out the various spirits distilled from the beer as well as their whiskey. Food is typical hearty local fare; Nuremberg sausages are a particular highlight and prices are reasonable. When we went it wasn't too busy, but our (quite kind) server indicated that this was unusual.