Kungaloosh

Source
Requires Cooking (375). The recipe is gained by talking to the Washed-Up Mage behind the grate in The Underbelly of Dalaran. It is marked as a quest, so will appear over him.

The materials can be conveniently purchased from Alfred Copperworth, the butler in Dalaran's Purple Parlor, from Applebough, the fruit vendor on the street below, from the barmaid Inzi Charmlight in A Hero's Welcome for Alliance players, or from Umbiwa and Mimbihi in The Filthy Animal for Horde players.

You must first have completed the following quests:

Then the following chain will be available:

Origin of name
This is a reference to a drink served in the Adventurer's Club at Walt Disney World's Pleasure Island. The much-loved club was closed in late 2008, and this appears to be the WoW developers' tribute to it.