Well then! Here's the story.
Most Elves in RPG's usually have some kind of wacky backstory behind their creation. Take the 'Bosmer' In TES series. They're the 'wood elves' of the game and Bosmer means 'tree-sap' in their 'langauge'. Since Chefelf used the word 'chef' in the beginning, I formulated a cheesy backstory behind it and wrote it in my story.
People rarely come up with that kind of stuff as to how Elves are made, but when they do, they normally make them 'creatures of somethingthisthatwhatever'. Dark elves are 'dark' The snow elves are 'snowy', you get the idea. So the Chefelves are kitchen elves.