"Alphabetic confectionary nomenclature" is a fantastic phrase, and I regret that I will have great difficulty finding another use for it.
I'd go with Lemon Drop.
or Lemon Sherbet, because Dumbledore :)
Then M&M?
This deal with KitKat may well set the precedent for that to happen! In fact, wouldn't be surprised if the marketing/branding folks at M & M and other candy manufacturers are already thinking along these lines.
My GF isn't a techy person, but she asks "What's with this Android KitKat thing!?". So I explain it to her. She says "I MUST HAVE A KITKAT."
Of course...I also got a KitKat...
I'd go with Marzipan
That won't happen, because Americans basically don't know what marzipan is.
Honeycomb isn't exactly popular here either.
Neither was Android Honeycomb
Monsanto.
Maybe even with a similar corporate collaboration with Eminem