Peel the onion, remove the top and bottom, and slice very thinly using a vegetable slicer.
Add the ○ ingredients with the onions, cover with plastic wrap and chill in the refrigerator for at least 10 minutes. The nutritious essence will seep out of the onions.
Transfer to serving plates, pour the liquid over, add a generous amount of bonito flakes and it's done.
Story Behind this Recipe
Our family's way to enjoy sweet onions is to eat them raw, and as simply as possible. I usually use soy sauce, but this time I tried using shio-koji. A bit of soy sauce is added for fragrance.
To keep the sweetness and the nutrition of the sweet onions, don't soak in water. When this is freshly made, the harshness and sweetness of the onion are well defined, but as it rests the sweetness becomes more dominant. Drink up the liquid too! This ohitashi will help keep your blood clean.