Nattō (納豆) is a traditional Japanese dish consisting of fermented soybeans and characterized by a slimy, sticky and stringy texture. It's easily recognizable by its distinctive, somewhat pungent smell, while its flavor is commonly described as nutty.
It is often served as a breakfast food. It is served with karashi mustard, soy sauce, and sometimes Japanese bunching onion.
Product of Japan (Fermented Soybeans with sauce and mustard)