nattō
Let an agent explain natto and how it is made and eaten, relay its history, regional varieties and nutrition from food science and culinary sources, describe related fermented soybean foods, and distinguish natto from miso, tempeh, douchi and other fermented soy products.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain natto and how it is made and eaten, relay its history, regional varieties and nutrition from food science and culinary sources, describe related fermented soybean foods, and distinguish natto from miso, tempeh, douchi and other fermented soy products.
A traditional Japanese food of soybeans fermented with Bacillus subtilis var. natto, giving a sticky, stringy texture and strong smell and flavour, eaten mainly at breakfast with rice, soy sauce and mustard, and produced in regional forms such as Mito natto from Ibaraki, alongside distinct salted and dried fermented soybeans such as Daitokuji natto and Hiyama natto that use koji moulds rather than Bacillus; natto is rich in protein, vitamin K2 and the enzyme nattokinase and is studied for its health properties.
What it is for: Food.
It can be explain production and eating; relay history and varieties; describe nutrition; distinguish related foods.
Distinguishing features
Sticky threads
Strong aroma
Bacillus fermentation
Breakfast staple
What it looks like
Brown soybeans covered in sticky, stringy threads.
Physical character
fermentation organism: Bacillus subtilis var. natto organism
vitamin K2 content: very high note - menaquinone-7
fermentation time: about 20-24 hours - at about 40 C
How it is recognised
Bacillus-fermented sticky soybeans
Mito natto; salted koji-fermented types such as Daitokuji natto and Hiyama natto
Miso is a paste; tempeh is a mould-fermented cake; douchi is Chinese salted black beans
Related models
is a kind of - in registry terms
is a kind of - in registry terms
is fermented by - var. natto
is contrasted with - a koji-fermented paste
In practice
Families and kinds
itohiki natto, the common sticky type, including Mito natto
hikiwari natto from crushed beans
salted and dried types such as Daitokuji natto and Hiyama natto, made with koji
regional and artisanal natto
natto-based products and supplements
Standards and regulation
Japanese food labelling and JAS standards
Food safety rules for fermented foods
Regional product designations
Failure modes and hazards
Confusing sticky natto with salted koji types
Interaction of vitamin K2 with anticoagulant medication, which clinicians manage
Overstating health claims
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What natto is.
Definition.
Definition
Definition and kinds.
Definition
Definition.
- What is natto, and how do sticky natto and salted types such as Daitokuji and Hiyama natto differ from miso, tempeh and douchi? definition
- Is the question about natto, a regional type or another fermented soy food? boundary
Production
Production.
Production
Production.
- How is natto made, from soaking and steaming to inoculation and fermentation? definition
- Which entry fits the specific process? action
Eat Eating natto.
Practice.
Serving
Serving.
Serving
Serving.
- How is natto traditionally served and used in dishes? action
- Which references are standard? provenance
Nutrition
Nutrition and health.
Nutrition
Nutrition.
- What are the nutritional properties of natto, and what does research say about nattokinase and vitamin K2, with findings attributed? provenance
- Is the user asking about their own health or medication, which needs a clinician? boundary
History History and regions.
Attribution.
Origins
Origins.
Origins
Origins.
- How did natto originate, and what legends and evidence surround it, as historians describe? provenance
- Which sources are cited? provenance
Regions
Regional varieties.
Regions
Regions.
- What are Mito natto and other regional varieties, and how is natto produced commercially today? provenance
- Which entry fits the specific variety? action
Context Culture.
Context.
Culture
Culture.
Culture
Culture.
- What role does natto play in Japanese food culture and regional identity? provenance
- Which entry fits Japanese cuisine? action
World
Related foods worldwide.
World
World.
- What similar Bacillus-fermented soybean foods exist in Korea, Nepal, Myanmar and Africa? provenance
- Which entry fits fermented soybean foods? action
What the second pass must settle
- Should the salted koji types be separate entries?
- How should food science sources be linked?
- The registry entry has merged aliases naming distinct products; should they be split off?