Natto

Natto is soybeans fermented with Bacillus subtilis until coated in a sticky, stringy film with a pungent smell and a savoury, slightly bitter taste. It is a cheap, high-protein breakfast food eaten over hot rice, and it divides Japanese people too — far more popular in eastern Japan than in the west. The smell and the sticky threads are what stop most visitors; the taste is milder than the aroma suggests.

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FERMENTED FOODS

Natto thumbnail
Natto¥100〜¥200
ModerateFERMENTED FOODS

ABOUT

Natto is soybeans fermented with Bacillus subtilis until coated in a sticky, stringy film with a pungent smell and a savoury, slightly bitter taste. It is a cheap, high-protein breakfast food eaten over hot rice, and it divides Japanese people too — far more popular in eastern Japan than in the west. The smell and the sticky threads are what stop most visitors; the taste is milder than the aroma suggests.

DIETARY NOTES

VegetarianVEGETARIAN
Vegetarian-friendlyFermented soybeans — vegan in itself, but the sauce packet usually contains bonito dashi. Ask for it plain or with just soy sauce.
PorkPORK
No pork in the standard version.
AlcoholALCOHOL
No cooking alcohol (mirin / sake) in the standard version.
AllergensCOMMON ALLERGENS
Soy

General guidance for the standard version of this dish. Recipes vary by shop and region — always confirm with the restaurant if you have an allergy or a religious dietary requirement.

DETAILS

OriginORIGIN
Fermented soybean foods are over a thousand years old; one legend ties natto to warhorses carrying boiled beans in straw, which carries the right bacteria. It is strongly associated with Ibaraki and the Tohoku region.
How to EatHOW TO EAT
Open the pack, add the sachets of tare sauce and mustard, and stir hard for 20–50 strokes until foamy and very stringy, then spoon over rice. Chopped spring onion or a raw egg is a common addition.
FrequencyFREQUENCY
Moderate — Seen at specialty shops
PricePRICE
¥100〜¥200