Krab (Imitation, Krab with a K)
I always hear people asking the question, "how do they make fake crab?" So, I looked into it. It is pretty freakin' nasty.
Krab (with a k) is made with Surimi, a tasteless slurry/paste of processed assorted white fish with chemical flavoring and texture additives. Yum!
You can read a little about the process here.
I think this would make a great episode for How It's Made, so I made a suggestion on their site.