A 1-egg tamagoyaki (rolled omelette) is made more voluminous by adding fish sausages. These are perfect for bentos.
I thought, what if I used some leftover fish sausage in a tamagoyaki?
If you add too much sausage to the egg it'll be hard to roll up.If you use 2 eggs the tamagoyaki will be even more hearty. (Please adjust the seasonings in that case.)
Enjoy Japanese food around the world.