I wonder how it would taste as sushi.
Spam musubi doesn’t count.
I think the most common way I've had it cooked it blowtorched, but some types of clams are baked, others are grilled, etc.
(I live in Tokyo currently)
As the GP pointed out, this might not be an issue in the US (because of freezing requirements). But I would not be one to be eating carp "raw".
It's possible that this is the thing that takes narezushi mainstream, but I doubt it.