April 8th, 2012
Brush tuna steaks on both sides with oil and season with salt and pepper. In a heavy non-stick frying pan over high heat, sear steaks until browned, about 2 minutes. Turn over and sear other side. Be careful not to overcook tuna. It's best rare to medium-rare.
Meanwhile, in a small pot, combine butter, lemon juice, soy sauce and wasabi. Heat over low heat, stirring constantly, until smooth and emulsified. Remove from heat.
Serve tuna immediately, drenched with sauce and sprinkled with green onions.