Always when in Hong Kong I go to Schnurrbart. They have by far the best beer in town named Jever. It takes 8 minutes to fill up a glas but it is definitely worthwhile to do so.
The location in Lan Kwai Fong is there since many many years. Probably the only bar/restaurant that is older than 10 years. All other places around Schnurrbart change all the time. Really an icon. I would't eat there... But the beer can't get better!