Marinating radishes overnight transforms their color into a beautiful cherry-like red. These will last in the refrigerator, and since they're colorful, they're perfect for bentos.
I love these so much that, while I was pregnant, I ate too many and got a tummy ache!
The amount of salt to rub into the radishes should be about 3% of the weight of the radishes.
Enjoy Japanese food around the world.