You can make these 2 types of sauce whenever you need some. They're easy and delicious.
The tomato sauce I usually have in stock was all gone, so I tried just mixing this up and it turned out delicious. I don't like raw onions, so I made a milder version.
I also recommend adding oregano, basil, nutmeg, ichimi pepper, or mayonnaise.
Enjoy Japanese food around the world.