The farmer Barlin wants to place poisonous traps about his farm to protect it from "beasties" and other trespassers. He's asked you to create a suitable poison for him. Three flasks of Venom should do the trick.
- Ask Barlin "Know of any well-paying work in Lothering?" and ultimately choose "(Poison) I have... dabbled in such things." You'll need three flasks of venom to complete the quest.
- Leliana or another Poison-Making character can make the venom from three flasks (buy from Barlin) and three Toxin Extracts.
- The Warden can get Toxin Extracts by killing the spiders on the eastern side of town just north of the river.
- Return to Barlin and give him the Venom.
- ~100 XP