Choose a piece of tuna that's about 2.5cm (1in) thick. It has the best taste and texture if it's lightly seared so it's almost raw, and still a deep pink inside, but if you like it more cooked ...

Brush each piece of tuna with the regular olive oil and season. Heat the pan until really hot, then cook the tuna for about 1½ minutes each side so that it’s still slightly raw in the middle ...

Chock full of belly-filling protein, tuna is a healthy eating superstar. It's beautifully versatile, whether snapped up by the tin for pennies or seared in steak form for a special meal.