Cut the tuna into 1/4-inch thick slices. Place a cucumber slice under each piece of tuna and set three on each salt brick or plate. (The sashimi tuna must be set on the salt immediately just before ...

Tuna occupies an odd spot in the American food consciousness. We tend to think of it as either a humble canned good—bone-dry and flavorless unless it's cut heavily with mayo—or a luxury seafood to be ...