At the time of completing this quest I was a level 50 warrior. After minor deliberations concerning time and level efficiency, I determined the following mobs and path was best for someone of the mentioned level to complete this quest...
|-- Giant Egg --|
• Primitive/Savage Owlbeasts of the Hinterlands
-- Average of a 33.5% drop rate
-- http://www.wowhead.com/?npc=2928 || http://www.wowhead.com/?npc=2929
|-- Zesty Clam Meat --|
• Big-mouth Clams
-- I chose to get these from the Saltwater Snapjaw in the Hinterlands. They have approx a 40% drop rate of the Clams. The clams will always give you a Zesty Clam Meat with the possibility of a variety of pearls.
-- http://www.wowhead.com/?npc=2505 [Saltwater Snapjaw] || http://www.wowhead.com/?item=7973 [Bug-mouth Clam]
|-- Alterac Swiss --|
• Upon returning to the Kalimdor continent, I chose to make a quick stop off at Freewind Post in Thousand Needles. The Innkeeper Abeqwa for the Alterac Swiss.
-- http://www.wowhead.com/?npc=11116
At this point you can continue your short flight to Gadgetzan to complete your quest. This was mearly my method. I found this method to be very time and cost efficient for my level. While considering this, there are far more possibilities of completing this quest. I recommend everyone take a few minutes to ponder the best route for your solution to this quest.
• Giant Egg [http://www.wowhead.com/?item=12207]
• Big-mouth Clam [http://www.wowhead.com/?item=7973]
• Vendors for Alterac Swiss [http://www.wowhead.com/?item=8932#z0z]