The Chantry would like an enterprising and well-traveled adventurer to collect nine samples of corpse gall. If, by chance, the aforementioned adventurer should find themselves so lucky as to have an abundance of corpse gall, the Chantry will gladly pay extra for them.
Note: If you talk to a Chantry representative while this quest is active and you have more than 9 samples (to complete other quests for example), you will automatically complete this quest. Simply do not accept the quest until you have more than 18 samples, or avoid speaking to a Chantry representative with less than 18 samples, to get the higher reward.
Once the desired amount of corpse gall has been obtained, return to any Chantry representative for a reward.
Note: If you haven't completed the quest before "The Final Onslaught", it'll still automatically count as completed once you've collected enough samples from the undead encounters during the quest.