If you make the ketchup rice in a rice cooker, you can have omurice (an omelet with seasoned rice) ready in no time! And you only have to wash the frying pan once, so it's really easy.
My daughter suddenly requested omurice! I didn't have any leftover rice, so I put all the ingredients into my rice cooker and made ketchup rice!
This way is much easier than making it with leftover rice! Kids love omurice.
Enjoy Japanese food around the world.