Bring a decent amount of water to a boil and cook the spaghetti. (Cook 1 minute shorter than the instructed time on the package.)
Add all the ☆ ingredients into a serving dish and mix it up.
Mix the natto with its accompanying sauce.
When the spaghetti is done, drain it in a colander. Transfer into the serving dish from Step 2 and mix everything up lightly.
Here's the fun part: put the natto from Step 3 in the middle and make a dent for the egg.
Wow, the egg settled there quite nicely. Crack the egg into the dent. I usually use a whole egg, but just the yolk could work as well.
Top with as much mayonnaise as you'd like!
Scatter some shredded nori seaweed and enjoy.
Story Behind this Recipe
I saw this dish at some restaurant. I wouldn't have the guts to eat this outside, but there's no problem at home - besides, it's so inexpensive!!
[No.1] Make sure the egg fits in the natto dent. This reminds me of a game I used to play at an amusement park, where you'd throw a colored ball into a cup and you win a prize if it goes in. [No.2] Take your time to mix the natto well. They say that if you mix both ways 100 times each, it warms up the good bacteria to help your constipation!