If you can get really good $20 a pound, fresh bluefin tuna, make this.1/2 cup soy sauce
1/4 cup mirin
1 small shallot, thinly sliced
1/2 jalapeño, 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

1. In a small saucepan, combine the soy sauce, mirin, shallot, jalapeño, orange juice, lemon zest and juice, sugar and coriander. Simmer over moderate heat until reduced by half, about 8 minutes. Strain the sauce.
2. 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. You may have to do this OUTSIDE as the smoke is quite copious: A butane stove and a iron skillet….

Serve with rice and a light salad of raw veggies. the Sauce is good on the veggies…