Another Essential Question. Anyone here a graphic designer?
The logo should probably be simple, clean and representative of the site's purpose - similar to the seminal StackExchange sites (SO, SF, SU.) Perhaps we could take a key tool or ingredient from brewing and have some artistically inclined folks logofy it.
As an example, carboys are used in both beer and wine brewing and are fairly recognizable. A simple logo with a carboy, perhaps with something bubbling inside. It would be simple and symbolic.