In article , Dan Logcher
wrote:

I was under the assumption that slapping mirugai caused it to respond
involuntarily, while quite dead.

I've seen Itamae clam slapping for aoyagi, but never for mirugai.

But the aoyagi too was dead, no?

--
A Dictionary of Japanese Food, Ingredients & Culture by Richard Hosking
(Tuttle, '97). All anybody needs to know about plumbing the depths of Japanese
food; a cuisine far more vast than sushi.