Toro is one of the most desirable cuts of sushi-grade fish on the market — basically ... of $25 for a single slice of sashimi might seem outrageous, but the reason toro tuna is so expensive ...

If you don't have a good fish market nearby, there are plenty of ... Stack the tortillas and wrap them in foil to keep warm. Thinly slice the tuna and transfer to a platter. Serve with the onions ...