

The tuna belly fillets in Callipo olive oil are made from "yellow fin" tuna, from which the muscle bands of the belly are extracted and then processed. These muscle bands represent precisely the most valuable part of yellowfin tuna. The box of these tuna belly fillets has a premium price, and it could not be otherwise: the ventresca can definitely be considered the "caviar" of tuna.
Here's a tuna presentation video Callipo, Calledipo.