To prepare the dish, chefs at Ikkatei Tabiji, in Hakodate, Japan, first remove the head of the squid before serving the body, with tentacles intact, over a bowl of sushi rice.
Seasoned soy sauce is then poured over it.
As the squid is served so fresh, when the sauce is added signals across nerve cell membranes are re-activated temporarily, making it "come back to life".
The body is then removed and prepared by the chef to be served as a side accompaniment.