Scad, jack or horse mackerel, likely to be around 15 cm (6") long. The tough part near the tail must be removed before cooking. Fish which have a firm tail section and bright eyes are the ones to select. They are at their best from spring to autumn (US: fall) and are used for sashimi or sushi and may also be grilled, simmered or deep-fried, or just filleted and marinated in vinegar. Aji also means flavour.

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