Natto tastes savory, tangy, and a little funky , with a flavor some people compare to strong cheese, soy sauce, or fermented beans. The texture is usually the bigger shock than the taste: it’s sticky, slimy, and stringy.

Quick scoop

  • Taste: Umami-forward, slightly bitter or nutty to some people, with a fermented “sharpness”.
  • Smell: Pungent and often stronger than the flavor itself.
  • Texture: Sticky and gooey, which is why many first-timers find it unusual.

What it’s like

If you’re expecting something mild like plain soybeans, natto is very different. A common description is “acquired taste ” — once you get used to it, the savory depth can be appealing. Many people like it more with mustard, soy sauce, green onion, or rice because those add salt, brightness, and balance.

Best mental model

Think of natto as:

  • Fermented beans + strong umami.
  • A smell stronger than the actual flavor.
  • A texture that you either ignore or immediately notice.

If you want, I can also tell you whether natto is healthy , or how to make it taste less intense.