A Rumor about Skull Lake
The quest is located at the icon of a skull, found at the north end of the Akkala region. This quest is unlocked after completing the Akkala Tower Chapter 4 scenario. Completing the mission will unlock the Curry Connoisseur quest.
"You've heard that when night falls at Skull Lake, a merchant sometimes appears who trades special items for monster parts. Find out if the rumor is true."
"The rumor about a merchant at Skull Lake is true—he's running a shop called the Fang and Bone and is deeply fascinated by monsters. You'll likely meet him again someday."