I always try to find little factoids about the various brews these are based on, but a lager is common enough that I don't think it's necessary or interesting to anybody but beer buffs. Instead, I'm going to point out how awesome some of the Blackrock/Dark Iron themed brews are. This one makes you belch fire, but there's also the Dark Iron Ale that you can use to get a pet from the Darkmoon Faire, and the Sulfuron Slammer which creative individuals use to break crowd control effects cast upon them in PvP. The best of the lot is the Dire Brew, which turns you into a Dark Iron Dwarf for an hour. Awesome? Yes, I think so. You can get all of them in Blackrock Depths, so go celebrate in the Grim Guzzler sometime this week!