Gretchen the Alchemist
From UOGuide
Gretchen the Alchemist near her desk in Ariel Haven
Gretchen the Alchemist can be found in Ariel Haven which is the Human Encampment inside the Underworld. She gives the Curiosities quest in which you need to obtain the 3 bones and fertile dirt. The reward of the quest is an Exploding Tar Potion.
