Food · Fermented foods

Nameko (Slippery Mushroom)

なめこ (Nameko)

Also known as: Nameko, Slippery mushroom, Pholiota microspora, Pholiota nameko, なめこ, 滑子

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At a glance

CategoryFood
Japanese labeling nameなめこ
Common Japanese notationsなめこ, 滑子, ナメコ
OriginNameko mushroom (Pholiota microspora); cultivated extensively in Japan; principal modern production regions Yamagata (volume leader), Niigata, Nagano, Hokkaido; distinctive gelatinous coating that gives the name (nameko = 'slippery one')
Typical functionsNameko miso-shiru (nameko miso soup) — defining application, Nameko-oroshi (with grated daikon) — traditional appetizer, Foodservice and household soup ingredient
Regulatory status in JapanStandard agricultural product labeling. Yamagata, Niigata, Nagano major regions. Not a designated allergen.

Nameko (なめこ / 滑子) — Pholiota microspora — is a defining Japanese mushroom characterized by its distinctive gelatinous coating ('nameko' literally means 'slippery one'). The OEM positioning is universal: as the central ingredient of nameko miso-shiru (nameko miso soup, a household and foodservice staple), as nameko-oroshi (with grated daikon, traditional appetizer), and as a pre-cooked vacuum-pack volume retail format. Yamagata leads domestic production.

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Classification

Tags below link to other ingredients sharing the same attribute, so you can pivot from one ingredient to its peers.

Common OEM product categories

Finished-product categories where Japanese OEM manufacturers commonly formulate with this ingredient.

  • Pre-cooked vacuum-pack nameko (the volume retail format)
  • Fresh nameko in cluster-form
  • Nameko miso-soup instant retail

Ingredient profile

Pholiota microspora mushroom with gelatinous coating. Volume cultivated.

Production: Yamagata (volume leader), Niigata, Nagano, Hokkaido.

OEM applications

Nameko miso-shiru — central application.

Nameko-oroshi appetizer.

For OEM: pre-cooked vacuum-pack retail (volume format), fresh cluster retail, instant miso-soup retail.

Regulatory classification in Japan

Standard food labeling. Major production regions for premium positioning. Not a designated allergen.

Regulatory classification in other markets

EUNiche specialty positioning.
USANiche specialty in Asian cuisine channels.
ChinaNiche specialty positioning.
KoreaNiche specialty positioning.

Market reference formulations

Example finished products will be added after verification of regional origin.

All brand names and product names referenced anywhere on this site are the property of their respective owners. Example entries are provided for informational purposes only and do not imply endorsement.

Seasonality & supply calendar

Harvest months
Wild: September – November; cultivated: year-round
Peak supply
October – November (wild)
Off-season
Cultivated nameko supplies year-round; wild availability is short

Source: 農林水産省 特用林産物生産統計. Yamagata leads cultivated production volume.

Storage requirements

How the receiving OEM facility needs to handle inbound raw material.

Temperature
Chilled 4°C; vacuum-pack for shelf-stable
Conditions
Slime-coated mushroom; sealed in liquid pack often
Shelf life
Fresh 5–7 days; vacuum-pack 30 days; canned 24 months

Supply concentration

Where this ingredient comes from — useful for single-source-risk planning.

Primary regions
Yamagata, Niigata, Nagano, Iwate
Import dependence
100% domestic cultured supply

農林水産省 特用林産物統計

Certifications commonly available

Certification schemes commonly obtainable for this raw material. Always confirm the specific supplier's current certificate before contracting.

SchemeAvailability
Organic JASOn-request
HalalInherent
KosherInherent
VeganInherent

Alternative ingredients

Related ingredients commonly evaluated as substitutes.

Quick answers

What is Nameko (Slippery Mushroom)?
Nameko (なめこ / 滑子) — Pholiota microspora — is a defining Japanese mushroom characterized by its distinctive gelatinous coating ('nameko' literally means 'slippery one'). The OEM positioning is universal: as the central ingredient of nameko miso-shiru (nameko miso soup, a household and foodservice staple), as nameko-oroshi (with grated daikon, traditional appetizer), and as a pre-cooked vacuum-pack volume retail format. Yamagata leads domestic production.
What is the regulatory status of Nameko (Slippery Mushroom) in Japan?
Standard agricultural product labeling. Yamagata, Niigata, Nagano major regions. Not a designated allergen.
What products typically use Nameko (Slippery Mushroom)?
Pre-cooked vacuum-pack nameko (the volume retail format) / Fresh nameko in cluster-form / Nameko miso-soup instant retail
Where does Nameko (Slippery Mushroom) come from?
Nameko mushroom (Pholiota microspora); cultivated extensively in Japan; principal modern production regions Yamagata (volume leader), Niigata, Nagano, Hokkaido; distinctive gelatinous coating that gives the name (nameko = 'slippery one')
What is the INCI / JSCI labeling name for Nameko (Slippery Mushroom)?
JSCI: なめこ

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References

  1. 文部科学省 (Ministry of Education, Culture, Sports, Science and Technology) Standard Tables of Food Composition — なめこ 各形態

Last updated: 2026-04-28. Ingredient entries are reviewed at least annually against current regulatory listings.

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