Grilled Tuna with Citrus Salsa

Bahan-bahan (4 porsi)

• 2 medium oranges, (peeled and diced (cut off any white pith))
• 1 medium red bell pepper, (seeded and finely chopped)
• ½ cup diced red onion
• ¼ cup torn fresh mint leaves
• 2 tablespoons red wine vinegar
• sea salt and freshly ground black pepper, (to taste)
• Four 6-ounce fresh tuna steaks
• 1 tablespoon extra-virgin olive oil
• 1 teaspoon ground coriander
• sea salt and freshly ground black pepper