Collect a Laden Dew Gland and bring it to Marin Noggenfogger in Gadgetzan.
I've got an idea, see. I've heard of some strange creatures called dew collectors that live to the southwest... and that they are able to store water in special glands.
I think that if I could get one of these glands, I could create a drink that would quench my terrible thirst! Do you think you could help me, [player]?
Look for the cactus garden, [player]; that's where you'll find the dew collectors.