This one is a real pickle — it's extremely simple, and doesn't look spectacular, but packs a serious punch of flavor and deliciousness. You can easily upgrade or downgrade the recipe based on your liking, use different ingredients, but as long as you make ground meat under a blanket of mashed potatoes, it's gonna be fine ;-)
The bare tuna-paste bento was a great success, but with the arrival of my new bento container, I was left with some extra unused space. I decided to fill the space with easy to make and very tasty iri tamago, which is basically a Japanese kind of scrambled eggs! You can definitely use iri tamago in onigiri, or as a small side dish.
Tuna paste is ridiculously easy to prepare and makes a great no cooking bento, cutting the preparation time to less than 20 minutes, including rice cooking time! Now, that's what I would call cooking on the go! You can also use the tuna paste for a great tasting onigiri or sushi.