Schlenkerla
Set in the middle of Old Town, this tavern has been serving beer inside an ancient half-timber house since 1405. The food is standard German brewhouse fare—think bratwurst, beef brisket, or pork shoulder, all drowning in beer sauce—but the real reason to come here is to sample the Aecht Schenkerla Rauchbier, a dark beer brewed with smoked malt. It's an acquired taste (something akin to liquid ham), so the best strategy is not to sip and enjoy, but to take large gulps. And if you can polish off the first half-liter, you'll be a fan for life. Expect a queue to get inside at weekends and during high season.