This quest is no longer available within the game.
The extremely potent essence mango grows across many of the islands in the South Seas. A single mango will refresh those who eat it, both physically and mentally. If you've never had one, you do yourself a disservice!
We have enough of a supply here on the isle to offer you a handful in exchange for a Zandalar Honor Token. Speak with Vinchaxa if you need to learn how to get tokens; otherwise, let's get to the business at hand!