The main peculiarity of this piece, which confers its supreme quality, is its elaboration with pieces of bonito arrived fresh at the Cantabrian fish markets. The proximity of the maritime routes taken by the boats that go out to fish make it possible for the bonito pieces to arrive fresh at the canneries without the need to freeze their meat. This gives each piece a unique and natural flavor, maintaining in each piece all the properties that characterize the bonito from the North.