A lot of great things throughout history have been discovered by accident: penicillin, potato chips, boners. But the genesis of this bullshit delicacy still has me a little perplexed. Caveman chef who pulled this one out of his ass was really stretching that day.
"Let's see...maybe if we scrape these sharp water rocks off the ocean floor then boil them for an hour a slimy little salt turd will pop out and I can charge $18 for like ten of them?" Good call, dude.
Although in a way I'm sort of jealous of the ingenuity and sense of discovery you got to experience back then. It was either figure out some new shit to stick in your face hole, or get eaten by a dinosaur. That sense of living on the edge played a big role in our evolution as a species and we're better off for it.
Haha, just kidding, evolution is a liberal myth.