Rich in omega-3s, tuna is a great addition to any diet. Give this grilled tuna a boost of flavor with a brief rest in an orange marinade--no longer than 30 minutes, or you'll overpower the tuna's delicate flavor. This recipe was written by the Healthline Editorial Team: http://www.healthline.com/health-recipes/grilled-tuna-farro-salad —Healthline
Combine first 6 tuna ingredients in a glass baking dish. Add tuna and turn to coat with marinade. Chill no more than 30 minutes.
Bring water to a boil in a large saucepan over medium-high heat. Add farro and reduce heat to medium-low. Cook covered, 30 minutes or until farro is tender. Turn off the heat and let stand 10 minutes. Meanwhile, combine remaining salad ingredients in a large bowl. Drain farro before adding to bowl and gently toss to coat.
Prepare indoor or stovetop grill for medium-high heat. Remove tuna from marinade, discarding marinade, and pat dry. Rub tuna steaks with 1 tablespoon vegetable oil and grill each side 2 minutes for medium-rare. Serve tuna over the barley salad.