“Mejika” is a kind of frigate tuna, and the small type of “mejika” that can be caught in Tosa Bay only between August and September is called “shinko,” which is a common sight in summer. It loses its freshness easily, and therefore local people recommend eating the fish on the day of the catch. You can eat the fish raw either on board the ship that has caught them or in a town close to the fishing port.
It is best to eat the fish as sashimi (sliced raw fish), which has a chewy texture, with so-called “bushukan” vinegar on it. ""Bushukan"" is a kind of citrus with an acidic taste. No other fish have the same texture as that of “shinko.”