Player's Handbook[]
The character is trained in the art of brewing beers and other strong drink. The character can prepare brewing formulas, select quality ingredients, set up and manage a brewery, control fermentation, and age the finished product.
Player's Option: Skills & Powers[]
This category includes the brewing of malt beverages, the making of wine, and the distilling of stronger drink. A character can perform all the basic functions of the brewer's art without requiring a proficiency check. If the brewer chooses to make the check, failure means that a batch has been wasted, but success means that a particularly fine vintage has been created.
Note from The Complete Paladin's Handbook[]
A paladin whose ethos forbids partaking of strong drink isn't likely to have this proficiency. A paladin with a more liberal ethos may use this proficiency to prepare drinks for others, even if he declines to partake himself.