Place the tuna in a shallow dish and pour over half of the dressing. Cover and chill for 1-2 hours to allow the fish to marinate. Toss in the marinade from time to time. Heat a ridged griddle pan ...

It is widely agreed that albacore tuna caught by pole is the best option as these fish are landed individually. Bluefin tuna - the most prized and the most vulnerable - should be avoided.