Peel and cut the kiwi fruit and avocado into very tiny little cubes, approximately ¼ to ½ inch. Throw them in a mixing bowl.
Chop the green onion, mint leaves, parsley and rosemary very finely and add that to the bowl containing kiwi and avocado.
In a small mixing bowl, add white wine vinegar, lime juice, honey, salt and pepper. Whisk until well incorporated and pour over reserved salsa.
Blend until evenly coated and set aside.
Preheat grill or cast iron skillet to very, very high heat.
Rub tuna steak with olive oil on both sides, sprinkle with salt and pepper
When grill or pan is really hot, throw tuna steak on and cook until a nice golden crust develops, about one or two minutes per side. Be careful not to over cook your fish as it’s really easy to over cook tuna. The sides of the piece of meat should remain a little bit rare.
Transfer tuna steak to serving plate, top with salsa and garnish with few fresh coconut shavings.