There's been a lot of ink spilled over the fate of the bluefin tuna recently—the hugely endangered fish is considered a delicacy by sushi enthusiasts, despite dire warnings from conservationists—just last week, a 600-lb bluefin caught near Japan sold for the world-record price of $736,000, or $1,238 per pound. But there is a possible alternative: Kindai bluefin, a somewhat more sustainable version of the prized fish, developed and "ranched" by Japan's Kinki University. It can be even more expensive than the real thing, and only a handful get flown to the US every week.

One Kindai landed in the hallowed kitchens of Del Posto recently, so they did the natural thing and called over Hideo Kuribara, from West Village sushi mecca Ushiwakamaru, to break it down. Here he is in action—the video is a bit graphic, but a fascinating demonstration of a knife master at work, and even a tiny bit educational! If tuna's not your style, check out their equally impressive chocolate tree video instead.

[h/t Eater]