Food · Fermented foods
Shiitake (Fresh and Dried Shiitake Mushroom)
しいたけ (Shiitake)
Also known as: Shiitake, Lentinula edodes, 椎茸, Kinoko-no-king (king of mushrooms), Donko (dried thick-cap premium), Koshin (dried thin-cap)
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| Category | Food |
|---|---|
| Japanese labeling name | しいたけ |
| Common Japanese notations | しいたけ, 椎茸, シイタケ, どんこ, こうしん, 原木しいたけ, 菌床しいたけ |
| Origin | Shiitake mushroom (Lentinula edodes); cultivated since 1600s in Japan; two principal cultivation methods — genboku-shiitake (原木 / log-grown) and kinshou-shiitake (菌床 / sawdust-block-grown); principal modern domestic regions Oita (Kunisaki/Bungo log-shiitake heritage), Tokushima, Iwate, Hokkaido; significant Chinese imports for cost-positioned applications |
| Typical functions | Fresh whole shiitake — universal cooking ingredient, Dried shiitake (donko premium thick-cap and koshin thin-cap) — major retail and dashi ingredient, Premium kaiseki and traditional Japanese cuisine, Functional positioning (β-glucan immune support, eritadenine cholesterol), Premium gift retail (Oita Kunisaki donko) |
| Regulatory status in Japan | Standard agricultural product labeling. 'Genboku-shiitake' (log-grown) vs 'kinshou-shiitake' (sawdust-block-grown) disclosure is increasingly important for premium positioning. Domestic vs Chinese-imported origin disclosure essential. Not a designated allergen. |
Shiitake (しいたけ / 椎茸) — Lentinula edodes — is one of Japan's most important and beloved mushrooms with extensive OEM applications: as fresh whole shiitake universal cooking ingredient, as dried shiitake (donko premium thick-cap, koshin thin-cap) — a major retail and dashi ingredient (see also separate shiitake-dashi entry), as premium kaiseki and traditional cuisine ingredient, as functional positioning food (β-glucan immune support, eritadenine for cholesterol), and as premium regional gift retail (Oita Kunisaki donko is iconic). Critical positioning distinction: 'genboku-shiitake' (log-grown) commands substantial premium over 'kinshou-shiitake' (sawdust-block-grown). Significant Chinese imports supply cost-positioned market.
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Classification
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Product applications
Functions
Regulatory tags
Origin
Common OEM product categories
Finished-product categories where Japanese OEM manufacturers commonly formulate with this ingredient.
- Fresh whole shiitake retail (year-round)
- Dried shiitake (donko, koshin formats)
- Pre-sliced and frozen shiitake
- Genboku (log-grown) premium retail
- Oita Kunisaki donko premium gift
Ingredient profile
Lentinula edodes shiitake mushroom. Two cultivation methods: genboku (原木, log-grown — traditional, premium-positioned) and kinshou (菌床, sawdust-block, modern volume).
Dried shiitake forms: Donko (thick-cap, partially-opened — premium), Koshin (thin-cap, fully-opened — volume).
Production: Oita (Kunisaki/Bungo log-shiitake heritage), Tokushima, Iwate, Hokkaido. Chinese imports.
OEM applications
Fresh universal cooking — sukiyaki, nimono, tempura, grilled, stir-fry.
Dried shiitake — dashi production (see shiitake-dashi entry), simmered preparations, Chinese-influenced cooking.
Premium kaiseki — Donko premium grade.
Functional positioning — β-glucan, eritadenine.
Oita Kunisaki donko premium gift retail.
For OEM: fresh shiitake retail, dried donko and koshin retail/ingredient supply, log-grown premium retail, premium gift retail OEM.
Regulatory classification in Japan
Standard food labeling. Genboku vs kinshou cultivation disclosure increasingly important.
Domestic vs Chinese-imported origin disclosure essential.
Functional health claims (β-glucan, eritadenine) require Foods with Function Claims (FFC) registration.
Not a designated allergen.
Regulatory classification in other markets
| EU | Imported as shiitake. Established global category. |
|---|---|
| USA | Established US shiitake retail. Domestic and imported supply. |
| China | China is major shiitake producer. Japanese-origin Oita Kunisaki donko positioned as premium specialty. |
| Korea | Established Korean shiitake (표고버섯) culture. |
Market reference formulations
Example finished products will be added after verification of cultivation method, origin, and product format.
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Seasonality & supply calendar
- Harvest months
- Spring flush: March – May; autumn flush: September – November (log-grown / 原木)
- Peak supply
- October – November (autumn flush peaks for premium 冬菇 dried grade)
- Off-season
- Cultivated (菌床) shiitake is harvested year-round; seasonality applies mainly to log-grown / 原木 shiitake
Dried 冬菇 grades require winter-harvested caps; sawdust-block (菌床) production smooths year-round supply.
Storage requirements
How the receiving OEM facility needs to handle inbound raw material.
- Temperature
- Fresh: 4°C, ~85% RH; dried: room temperature sealed
- Conditions
- Fresh in perforated bag; dried in moisture-proof sealed packaging with desiccant for 冬菇 grade
- Shelf life
- Fresh 7–10 days at 4°C; dried 12+ months sealed
Supply concentration
Where this ingredient comes from — useful for single-source-risk planning.
- Primary regions
- Cultivated (菌床): Tokushima, Hokkaido, Akita; Log-grown (原木): Oita (Japan's largest 原木椎茸 producer), Miyazaki
- Import dependence
- Fresh supply 100% domestic; dried 干し椎茸 ~70% imported (China)
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.
| Scheme | Availability | |
|---|---|---|
| Organic JAS | Common | Both 原木 and 菌床 organic-certified production |
| EU Bio | On-request | |
| Halal | Inherent | |
| Kosher | Inherent | |
| Vegan | Inherent |
Documented adulteration risks
Known fraud / adulteration patterns reported by regulators or industry bodies. Specify CoA params and screening tests on every PO.
- Chinese-grown dried 干し椎茸 sold under Japanese-origin labels
- 菌床 (sawdust-block) shiitake sold as premium 原木 grade
Detection: Country-of-origin label per 食品表示法; cap morphology and stem structure distinguish 原木 vs 菌床; isotope analysis for origin
農林水産省 特用林産物表示ガイドライン
Alternative ingredients
Related ingredients commonly evaluated as substitutes.
Quick answers
- What is Shiitake (Fresh and Dried Shiitake Mushroom)?
- Shiitake (しいたけ / 椎茸) — Lentinula edodes — is one of Japan's most important and beloved mushrooms with extensive OEM applications: as fresh whole shiitake universal cooking ingredient, as dried shiitake (donko premium thick-cap, koshin thin-cap) — a major retail and dashi ingredient (see also separate shiitake-dashi entry), as premium kaiseki and traditional cuisine ingredient, as functional positioning food (β-glucan immune support, eritadenine for cholesterol), and as premium regional gift retail (Oita Kunisaki donko is iconic). Critical positioning distinction: 'genboku-shiitake' (log-grown) commands substantial premium over 'kinshou-shiitake' (sawdust-block-grown). Significant Chinese imports supply cost-positioned market.
- What is the regulatory status of Shiitake (Fresh and Dried Shiitake Mushroom) in Japan?
- Standard agricultural product labeling. 'Genboku-shiitake' (log-grown) vs 'kinshou-shiitake' (sawdust-block-grown) disclosure is increasingly important for premium positioning. Domestic vs Chinese-imported origin disclosure essential. Not a designated allergen.
- What products typically use Shiitake (Fresh and Dried Shiitake Mushroom)?
- Fresh whole shiitake retail (year-round) / Dried shiitake (donko, koshin formats) / Pre-sliced and frozen shiitake / Genboku (log-grown) premium retail / Oita Kunisaki donko premium gift
- Where does Shiitake (Fresh and Dried Shiitake Mushroom) come from?
- Shiitake mushroom (Lentinula edodes); cultivated since 1600s in Japan; two principal cultivation methods — genboku-shiitake (原木 / log-grown) and kinshou-shiitake (菌床 / sawdust-block-grown); principal modern domestic regions Oita (Kunisaki/Bungo log-shiitake heritage), Tokushima, Iwate, Hokkaido; significant Chinese imports for cost-positioned applications
- What is the INCI / JSCI labeling name for Shiitake (Fresh and Dried Shiitake Mushroom)?
- JSCI: しいたけ
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Sharing similar functions
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From the same origin
Other ingredients that share an origin classification.
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Take the next step
FAQ for OEM buyers
Q. What's the difference between genboku-shiitake (log-grown) and kinshou-shiitake (sawdust-grown) for OEM?
The two cultivation methods produce significantly different products: (1) Genboku-shiitake (原木しいたけ, log-grown) — traditional method using shii or kunugi oak logs inoculated with shiitake spawn and incubated outdoors for 2-3 years before harvest. Distinctive thick caps, intense flavor, premium-positioned. Oita Kunisaki area is the heritage production region. Higher pricing reflects labor-intensive production. (2) Kinshou-shiitake (菌床しいたけ, sawdust-block-grown) — modern industrial method using sawdust blocks inoculated with shiitake spawn and grown in climate-controlled facilities. Faster production cycle (3-6 months), thinner caps, milder flavor, cost-positioned. Volume retail and processed food applications. For OEM positioning: premium retail and gift category requires genboku origin disclosure; volume cost-positioned applications use kinshou; donko (premium thick-cap dried) is most often genboku origin. Origin labeling distinction is increasingly consumer-expected.
Sources · Last reviewed: 2026-04-28
- Editorial — Japan shiitake cultivation method reference
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Official regulatory databases
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References
- 文部科学省 (Ministry of Education, Culture, Sports, Science and Technology) Standard Tables of Food Composition — しいたけ 各形態
- Oita Kunisaki donko production reference
Last updated: 2026-04-28. Ingredient entries are reviewed at least annually against current regulatory listings.