A cocktail glass is the ideal vehicle to deliver this tasty sesame crusted tuna. Fresh tuna is cut from the whole loin of tuna for the best flavor and the deepest red color. The tuna is placed in the glass over a bed of cooked white rice. A cucumber slice hold s the tuna as it rides atop the rice. Brewed soy sauce is dark and salty adding flavor to the fish and to the rice underneath.