What is Toro?
In Japan, a blue fin tuna is graded by the quality of the cuts of meat which can be obtained from it, particularly the prized toro, the fatty belly of the tuna. Tuna for sushi is carefully handled, to ensure that the flesh is not bruised or damaged. When the tuna arrives at the fish market, core samples of the flesh are taken with a special tool so that the color, texture, and flavor of the meat can be assessed before the tuna is priced. While sushi uses many different types of tuna including yellow fin and big eye, true toro is only taken from blue fin tuna.