there's nothing worse than ruining an expensive cut of meat or fish due to poor preparation. Even though tuna fillets can indeed be quite pricey, Chef Victoriano Lopez's first grilling tip is to ...

Take the tuna from the pan and place it on a cutting board and let it rest briefly. Slice it about 8mm (⅜in) thick and put the pieces on plates. Spoon some of the sauce over each portion ...