My husband's brother taught me this recipe. He insists that this is way to eat natto. He recommends it to me whenever we talk about cooking.
When I decided to give it a try, it tasted much better than I'd imagined.

Add the accompanying sauce from the natto pack to taste. If you like your natto to be strongly flavored, try adding a few drops of soy sauce.
If you like yours slightly spicy, mix in some ra-yu, doubanjiang, or yuzu pepper.
My brother-in-law recommends both the green onion miso mayonnaise and the tuna miso mayo. Recipe by Poppopepe