A cleric with knowledge of the healing sphere can take common reagents and
brew them into potent healing potions. Different potions require different
brewing times, with the more powerful and complex healing mixtures needing
the most time to concot. Even after time has been spent mixing and praying
there is no guarantee of success -- the final product depends on both the
cleric's apothecary skill and his or her skill in the spell being brewed.
Not all healing spells can be brewed as potions, and clerics can only brew
potions of healing spells that they are able to cast. As level and knowledge
in the healing arts improves, more spells will become available for brewing.
Using the 'brew' command without specifying a type of potion will list the
currently known mixtures that a cleric can atttempt.