Binary Brew is the September Brew of the Month.
All members of the Club get free sample of the brew in their in-game mail at start of September. Should you want more, your local Brew of the Month Club Brew Vendor sells it in stacks of six till the end of September, but you will only be able to access it until Brewfest starts. You will have to buy another membership form before the end of September if you want more during Brewfest.
On the first of September, members receive the following in game mail:
Our brew this month is a polarizing one; you either love it or like it. We'll let you decide.
If you enjoy this brew, you can purchase more from our vendors.
- Brew of the Month Club
Drinking one of these will create a Empty Brew Bottle that can be targeted and thrown. It also gives the chance of gaining a buff for five minutes where you'll speak "goblin binary" as Horde (01001000 = H in ASCII) or "gnomish binary" as Alliance (1000001 = A in ASCII). Note only those also affected by the buff will be able to understand you through
Speech in Party, Guild, and specific chat channels (Local, Trade, Local Defense, custom created channels, etc) is unaffected by the buff.