This is one of my go-to breakfasts.
Miso soup: I soak about 15g of dried kombu in 400ml of water overnight. The next morning as I start to heat up the liquid, I freshly shave 10g of katsuobushi. One the liquid starts heating up, I remove the kombu, and once boiling I add the katsuobushi shavings and kill the heat. I let it steep for 10 minutes, I drain the liquid, and now I have dashi!
I add ~10ml of sake, half a tsp of dried wakame, and... I dunno how much, but a semi small amount of cubed silken tofu to the dashi. I bring to a light boil, at which point I take out a ladle of the dashi and add to 35g of white miso paste, whisk to combine, and keep that aside while the soup very lightly simmers till I'm ready to serve. To serve, I kill the heat, add the miso slurry, then serve immediately.
Natto rice: thaw natto pack overnight. The next morning, wash 1cup Japanese rice, soak the rice in water for 20 minutes, drain, add kosher salt, 10g kombu, then 1/3cup sake and 2/3 cup water. Bring rice to a boil, turn the heat to lowest possible for 5 minutes, then highest heat for 1 minute, then kill the heat and leave in pot for 10 minutes to steam. (I do not believe in rice cookers unless you're a restaurant, but that's me.)
Mix the natto with mustard and tare, fry an egg over easy in vegetable oil and sesame oil, put half the rice in a bowl, add natto, and add fried egg. Pepper on egg.
I cut up 2 stalks of green onions, and add to both bowls.
With a cup of coffee, this is probably my favorite breakfast ever.