A level 49 quest for both factions, from level 44.
Unchanged in Forever as far as is known: the text, objectives and rewards below are Classic’s.
Sprinkle wants to you take the Violet Powder to Marin Noggenfogger in Gadgetzan.
Provided: 
Violet Powder
Here's the Violet Powder, ‹name›. Take it to Marin and tell him he owes me a favor!
Experience: 460
Oh, ‹name›, you're finally back. What have you brought?
Violet Powder, eh? Let's give it a try -- it sure couldn't make it any worse, that's for sure!
5 quests at level 49, 10,020 XP in all.
Collect a Laden Dew Gland and bring it to Marin Noggenfogger in Gadgetzan.
Marin NoggenfoggerTanaris
4,550 XP
[49]In Good Taste
Marin Noggenfogger wants you to speak with Sprinkle in Gadgetzan.
Marin NoggenfoggerTanaris
460 XP
[49]Sprinkle's Secret Ingredient
Sprinkle in Gadgetzan wants you to collect a Violet Tragan and return it to her.
SprinkleTanaris
4,550 XP
[49]Delivery for Marinthis quest
Sprinkle wants to you take the Violet Powder to Marin Noggenfogger in Gadgetzan.
SprinkleTanaris
460 XP
Marin Noggenfogger wants you to speak to him again after he creates his elixir.
Marin NoggenfoggerTanaris
Text, givers, objectives and rewards come from the cMaNGOS Classic database (a reconstruction of the 1.12 world), with what Forever changed on top: the game server’s own answers where we have them, else Wowhead’s Forever database. Places are Classic’s, shown on the Forever maps. Quest text © Blizzard Entertainment.
