From Guild Wars 2 Wiki
Brew Thieves are enemies encountered in Eldvin Monastery in the Krytan Freeholds, who attempt to steal ale. They are initially disguised as Shady Customers, and killing them will advance Keep the monastery operational.
- Upon being defeated, they will drop the Keg of Abbey Ale they were carrying.
- They will not attack, instead they just run away with the stolen keg.