The Brewmaster carries several types of beer with him that he can choose to distribute among his fellow Dwarfs in order to raise their spirits in battle!
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
Beer CasksURL Copied!
At the start of each Dwarf turn, the Brewmaster can bestow one of the following beers to himself and the unit he is with. Whenever the Brewmaster has given out a draught of brew, roll a D6. If you roll a '1', he and his unit suffer -1 to their Weapon Skill, Ballistics Skill and Initiative this turn due to their giddy and drunken disposition!
Bugman's XXXXXX: A very rare beverage that is almost considered sacred by Brewmasters. Never as potent as it was, Bugman's original XXXXXX puts this new batch to shame but it is still a fine brew.
One draught of this brew adds +1 to the unit's Strength until the start of the Dwarf player's next turn.Dwarf Special Reserve: A fairly common but no less enjoyable brew. It is said to warm cold bellies and put spirit into the heart of any Dwarf who drinks it.
One draught of this brew gives the unit the Immunity (Psychology) special rule until the start of the Dwarf player's next turn.Troll Brew: This brew is so named due to the fact that the main ingredient is Troll blood! It may sound bizarre but mixed with the proper ingredients the blood of a Troll can take on a very sweet taste and have interesting effects upon the drinker.
One draught of this brew gives the unit the Regeneration (6+) special rule until the start of the Dwarf player's next turn.