Make the tare
Combine Soy Sauce, Mirin, Sake, and Sugar in a small saucepan. Bring the mixture to a gentle simmer over medium heat, stirring until the sugar dissolves, then cook for 8 minutes until the sauce looks glossy and lightly syrupy. Remove it from the heat and let it sit while you prepare the eel.
Preheat the broiler
Set an oven rack about 6 inches from the heat and preheat the broiler on high. Line a baking sheet with foil so the eel is easy to lift off and the sticky glaze does not bake onto the pan.
Broil the eel
Pat the Unagi dry, brush the fillets lightly with Neutral Oil, and lay them skin-side down on the prepared sheet. Broil for 4 minutes, then brush the tops with a thin layer of the tare. Broil for 2 minutes more, brush again, then broil for 1 minute more until the glaze is deep brown, glossy, and bubbling at the edges and the eel is hot all the way through.
Assemble and serve
Divide the Japanese Short-Grain Rice between two bowls. Set the eel on top, spoon over any remaining tare, and finish with a light sprinkle of Sansho if you like its bright, peppery lift.













