To sear your tuna, get a nonstick pan hot with a touch of oil. Place your tuna in the oil and let sear for 20 seconds per side. You can go longer or shorter depending on your preference, but Chef Ruiz prefers a nice, rare tuna. Place your rice down in good mound on the plate, top with your tuna. Chef Ruiz prefers to top with freshly sliced green onions but feel free to experiment!