Seared Tuna Steaks with Citrus Soy Sauce
1/4 cup mirin
1 small shallot, thinly sliced
1/2 jalapeno, seeded and chopped
2 tablespoons fresh orange juice
One 3-inch strip of lemon zest plus
1 tablespoon fresh lemon juice
1 teaspoon sugar
1/4 teaspoon ground coriander
1 tablespoon vegetable oil
Four 4-ounce tuna steaks (1 inch thick)
Salt and freshly ground pepper
In a small saucepan, mix the soy sauce, mirin, shallot, jalapeno, orange juice, lemon zest and juice, sugar and coriander. Simmer over moderate heat until reduced by half, about 8 minutes. Strain the sauce.
In a large nonstick skillet, heat the oil until shimmering. Season the tuna with salt and pepper. Cook over high heat for 1 minute per side. Transfer the tuna to a platter and let rest for 1 minute; thickly slice and serve with the sauce.