Ebi

The shrimp are merely shown the boiling water and they instantly denature.

Not really. I exaggerated again by a million percent. The shrimp are dunked in the boiling water but only for less than one minute. They turn opaque white and orange immediately and you can see this coloration carry through to the center. It's done. And anything beyond that is simple shrimp-abuse.

The shrimp are de-veined by the underside.