Is there an ale house where they sell their own range of brewed beers?
Not sure about pubs or bars but if you want craft beer head to Lagerstrasse: https://craftbeerstore.de/
Wow, that looks just the ticket. Do you know if you can just buy by the beer? I want to sample (hence the need for a bar) rather than gamble and buy crates of the stuff.
Fleetenkieker do craft beers by the bottle http://www.irishpub-fleetenkieker.de/