Hasta has let you know of his plans to deal with mysterious creature who lurks behind some unpleasant rumours in the Water-works.
'Hethuwen took a closer look at that sample you gathered earlier and found some troubling results. Evidently, the source of the substance is a living creature!
'If this creature is allowed to persist, it will surely endanger the efforts of the hardy dwarves here in the Water-works, and perhaps in all of Moria. I have a plan, ${PLAYER}, that is sure to help us, but it will take some time to set it in motion.
'We shall bait the creature from out of its hiding place, and I have reason to believe it will be very large. A large stock of ingredients will be needed to prepare a lure that will be sufficiently appetizing. Speak with me again, and I'll let you know what I need. Oh, and...spread the word around to any friends who are fit to assist you. We will be needing rather a lot of ingredients.'
Hasta is in the Rotting Cellar in the Water-works of Moria.
You should speak with Hasta to find out what he will need to prepare a lure for the creature behind the disturbing rumours.