Although Japanese restaurants might still be regarded as special-occasion venues in Spain, at home sushi is becoming an everyday meal that can be purchased at mainstream supermarkets -- and not just high-end retailers.
Sushi has come along way from its luxury roots, and the former high-priced delicacy has swept across much of the Western world as one of the most popular grab-and-go food options.
Until quite recently, sushi sold in supermarkets was viewed with some derision: the fish isn't fresh enough, the rice loses its texture, and the additives required for shelf-stable food don’t belong in sushi.
But,
