Otoro Tuna

Otoro is a part of bluefin tuna that is the most desirable. It comes from the inside of the belly and it's the fattiest part of the fish. The texture is often described as intensely rich, marbled, and having melt-in-the-mouth properties. Due to these facts, it's traditionally the most expensive part of bluefin tuna.

It's often used in sashimi and nigiri, giving the dish a sweeter flavor. Otoro is the best during winter, once the tuna acquires additional body fat. It should always be consumed fresh as it doesn't last too much when frozen. This part of tuna is rarely found outside of Japan.