Tank him where he stands. When he does his speciall cast, called Direbrew's Disarm, move backwards a few steps to avoid it. DPSers, kill the non-elite adds all time, then DPS boss. He will summon 2 elite adds also. 1 of em throws a mug, that does 175 dmg on plate up to 400 dmg on cloth, every ~3 secs. The 2nd elite throws a barell that confuses (distracts u) for 8 secs. Ignore both elite adds, keep nuking boss and killing non elite adds. Loot trinkets, GZ. Pray for mount :P
P.S. the Q is repeatable, so, 1 of each member of grp takes quest each time. When boss killed, next member takes Q, and so on. So u get to loot boss 5 times if u r lucky.
P.S.2 u get the quest from BRD, inside the Bar area. In order to get to Bar, as soon as u enter BRD, there will be 3 non elite 70 mobs right of entrance. Kill em, and use the teleport console behind em to teleport to Bar.
If your tank gets "barreled", which can lead to a wipe.
The barrel effect can be avoided by drinking the Dark Brewmaiden's Brew. This is drink randomly thrown to a member of the party.
If you don't drink it within a few seconds then a random member (can be different then who got the Brew first) of the group is barreled. If your tank is barreled, he loses all aggro and that can lead to a wipe.
To avoid this all party members should make a macro
/use Dark Brewmaiden's Brew
Place this macro on your hotbar, and when it lights up, click it. This will drink the mug of ale and prevent the stun effect!