Isaki (伊佐木) aka Chicken Grunt, is one of Japan's most prized summer sushi fish, celebrated for its delicate sweetness, clean umami, and rich flavor as it develops seasonal fat. A favorite at high-end sushi counters across Japan, it's also enjoyed in Korea as Benjari Hoe (벤자리회), especially around Jeju Island, where it's served as premium seasonal sashimi.