Munin told you that if you bring him one of the delicacies he used to enjoy, he will give you a valuable item. Bring him either a Ginseng Root, Methu Egg, or some Sparkie Eggs.
Step 1. Find a delicacy and bring it to MuninA prescient Daeva, now imprisoned in a crystal at the The Forsaken Hollow. He was exiled after some sort of accusations in Pandaemonium..