She asks you to speak with Cheri, a gnome at their gnome colony on Tuai Leit, as rumberries have curative properties, and rum itself gives cognitive properties to zombies. On your way, you should pick 30 rumberries. Talk to Cheri to give her the 30 rumberries for what she assumes to be her special rumberry punch, but you change it to an elixir. Speak with Hakase who tells you to give the concoction to Ekahi.