Being one of Japan’s two favorite types of fish to eat raw, Japan takes its tuna pretty seriously. As a matter of fact, tuna sushi and sashimi gets different names depending on which cut of the fish is being served. While just about everyone loves ordinary tuna, either maguro or akami in Japanese, it’s the extra-fatty tuna belly, called chu-toro or o-toro, that people really rave about.
Of course, those same premium cuts that get gourmands’ mouths watering can leave your wallet crying, as the price of the extra-creamy toro can be more than double that of lesser cuts of tuna. That’s why we decided to test a theory we’d heard that you can unlock the full potential of akami with mayonnaise. But does marinating your ordinary tuna in mayo turn it into toro, or is this rumor just a bunch of bull?