Cook 200 g Japanese short-grain rice according to package directions.
In a small bowl, combine 100 g natto, 18 g egg yolk, 2 g karashi mustard paste, and 10 g Koikuchi soy sauce.
Stir the natto mixture vigorously for 1 minute until frothy and slightly sticky.
Sesli anlatım, porsiyon ayarı ve daha fazlası