Seared Sesame-Crusted Tuna with Wasabi Ponzu Sauce

1 tablespoon chopped green onions
2 tablespoons low-sodium soy sauce
2 tablespoons fresh orange juice
1 tablespoon rice vinegar
1 teaspoon brown sugar
1 teaspoon grated lemon rind
2 teaspoons fresh lemon juice
2 teaspoons honey
1 1/4 teaspoons prepared wasabi paste
1 teaspoon grated peeled fresh ginger
2 teaspoons vegetable oil
4 (6-ounce) tuna steaks (about 3/4 inch thick)
1/4 teaspoon salt
3 tablespoons sesame seeds
2 tablespoons black sesame seeds
Sliced green onions (optional)


Combine first 10 ingredients, stirring with a whisk.

Heat oil in a large nonstick skillet over medium-high heat. Sprinkle tuna with salt. Combine sesame seeds in a shallow dish. Dredge tuna in sesame seeds. Add tuna to pan; cook 3 minutes on each side or until desired degree of doneness. Garnish with green onions, if desired. Serve tuna with sauce.
from Cooking Light.