This is a mackerel tatsuta-yaki (deep fried mackerel) made with the fish caught in local seas. It's pickled with soy sauce malt, which increases the deliciousness. The bento is packed with Japanese-style side dishes to liven it up.
I made this while keeping the 5 flavors in mind for a bento contest. I made this with peanuts and seafood such as aji, using ingredients available in my hometown of Chiba!
Make sure to use fresh fish. Brown the fish on both sides while adjusting the temperature according to the stove in your house. You can also deep-fry them in oil.
Enjoy Japanese food around the world.