At Sushi World, we love to use every part of the fish, especially the collars! There's so much meat on there and it's sooooo buttery, it's ridiculous. Hamachi Kama is Yellowtail Collar and we sear it and serve it with a mixed greens salad and some ponzu sauce. You can get some rice, too, but we love it as is. It's a great item to get but especially so if you have someone in your party who loves eating fish but is not quite ready to eat raw fish. It's a pretty popular item but it's only in limited quantities so be sure to order it the next time you roll through.