To make the dressing or marinade whisk together the red wine vinegar, olive oil, parsley, chives, garlic, salt and pepper. Place the tuna in a shallow dish and pour over half of the dressing.

marinated artichokes, toasted pine nuts, and your olive gremolata dressing boasts a meaty machismo that's complemented by the uplifting vegetables and herbs. For a hefty vegetarian option ...