This goes really well with rice and stimulates your appetite. It's great for bento as well.
I found this dish in an old cooking book I found in the shed in my parents' house. I made it as soon as I came back to my place. I adjusted the amounts of seasonings, and now this recipe is perfect.
Brown both sides of the horse mackerel really well. The sauce will burn if you thicken it too much, so be carefully.
Enjoy Japanese food around the world.