If you are enthusiastic about Japanese food you might have all these ingredients in your cupboard. It's a really easy dish that is much tastier than it sounds.
I have served it here with kimchee and a bit of frozen spinach with lemon juice which is what I had to hand. You could add veg to stir fry or cook them to have alongside. Mushrooms, frozen peas and pepper could be nice.
I saw this recipe recommended in a magazine a while ago – and thought it sounded strange. However when I tried it I was very pleasantly surprised with the flavour and how filling it is – all ingredients have a long shelf life. You can also eat it cold as a salad.