Japanese Craft
Japanese cultures and specialist fermentation systems
CRAFT
Core Craft
From soybean selection to delivery, every step follows “Japanese craftsmanship, local freshness.” We blend traditional fermentation know-how with modern clean production to lock in activity and flavor.
Dongji Nayuan organizes cultures, equipment, environment and cold-chain as one manageable process: raw material control, stable fermentation and batch-based delivery.
Local Freshness
Near-market production shortens the path to freshness
Full Control
Temperature, humidity, timing and hygiene under control
DETAIL
Three Keys Behind the Craft
Not a single advanced step, but system-wide stability from culture to delivery.
Culture & Fermentation System
A culture-led rhythm of inoculation, fermentation and aging balances flavor, texture and mouthfeel.
Temperature, Humidity & Time
Segmented parameter control reduces batch variation and keeps fresh natto consistent.
Clean Production & Cold Chain
Clean environment, batch records and cold-chain delivery carry factory quality to consumers.
PROCESS
Five Core Steps
Select → Steam & inoculate → Ferment → Age & pack → Deliver
01
Raw Material Selection
Non-GMO small yellow soybeans, full-bodied and protein-rich.
Bean size, integrity and moisture are checked before acceptance, creating a stable foundation for steaming and fermentation.
02
Steaming & Inoculation
Precise-temperature steaming, inoculated with authentic Japanese natto cultures.
Steaming prepares the beans for culture growth; inoculation focuses on cleanliness, even distribution and timing.
03
Precision Fermentation
Guided by Japanese specialists with precise temperature and humidity control.
Temperature, humidity and time are managed as key process parameters to stabilize activity, texture and flavor.
04
Aging & Packaging
Low-temperature aging develops flavor; clean-room aseptic packaging.
Aging refines flavor while clean packaging reduces external interference and preserves finished quality.
05
Quality Delivery
Full-chain QC and activity testing, cold-chain delivery.
Finished goods are linked with batch records and delivered through cold-chain handling from factory to table.
QUALITY
How Craft Stabilizes Flavor and Activity
Visible process management supports the consistency expected in every pack.
01
Material Acceptance
Soybean lots, appearance and baseline indicators are checked before production.
02
Process Records
Fermentation parameters, timing and operations are retained for review.
03
Finished-goods Checks
Condition, flavor and batch information are confirmed before release.
