Meaning
納豆 (なっとう, Nattō) is Natto, a Japanese food (special foods, vegetable dishes).
What is Natto?
Nattō is a traditional food made from fermented soybeans. It is served with soy sauce, karashi mustard, and Japanese bunching onion. Nattō may be an acquired taste because of its powerful smell, strong flavor, and sticky, slimy texture.