Shima-Aji Sushi, 縞鯵 (Striped Jack)
Shima-aji, or Japanese “striped horse mackerel,” is a common point of confusion for many sushi eaters. The shima means “striped” and aji is Japanese “horse mackerel,” or “jack.” But shima-aji and aji make two very different types of sushi. Aji would be more familiar to those who have eaten the more common saba (mackerel), which is a bit more fatty and oily with a “fishier” finish. The shima variety is quite a bit leaner and more delicate, closer to kanpachi.