Oyster Mushrooms Sliced
Freezing Oyster Mushrooms
frozen Oyster grey mushroom
Frozen Oyster Mushrooms
IQF Oyster Mushrooms
Oyster grey mushroom

Oyster Mushrooms Sliced

GreenLand-food supplies IQF Frozen Oyster Mushrooms for importers, distributors, foodservice buyers, prepared food factories, frozen mushroom mix producers, retail frozen mushroom packs and private label programs. We can prepare Frozen Oyster Mushroom Slices, Frozen Grey Oyster Mushroom and Frozen Pleurotus Ostreatus according to your target application and packing requirements. We help your purchasing team confirm product form, slice thickness, color, cleaning condition, sand control, foreign matter control, packing format, frozen storage and export document support before quotation and production.

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Download Frozen Oyster Mushrooms Technical Reference | Request Specification and COA

Description

Technical Parameters

Product Description

We help your purchasing team confirm product form, slice thickness, color, cleaning condition, sand control, foreign matter control, packing format, frozen storage and export document support before quotation and production.

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Available Product Forms

Product Form	Common Specification	Typical Order Use
Whole Oyster Mushroom	Whole cap and stem condition confirmed by order	foodservice, further cutting, frozen mushroom packs
Sliced Oyster Mushroom	Slice thickness and size according to buyer requirements	hot pot, soup, stir-fry mix, ready meals
Diced Oyster Mushroom	15x15mm, 20x20mm, or customized	mixed vegetables, prepared foods, industrial processing
Grey Oyster Mushroom	Grey color type, whole or sliced	foodservice, retail frozen mushroom packs
White Oyster Mushroom	White color type, whole or sliced	retail packs, mixed mushroom programs
Bulk Pack	1x10kg carton	foodservice distributors and industrial buyers
Retail Pack	400g, 500g, 1kg bag, or customized	supermarket, private label and retail distribution

Specification

Product Name	IQF Frozen Oyster Mushrooms
Latin Name	Pleurotus ostreatus
Product Form	Whole, sliced, diced, grey oyster mushroom, white oyster mushroom, bulk pack and retail pack
Origin	China
Cultivation Type	Cultivated oyster mushroom raw material
Color	Grey, white, or natural color according to raw material type
Size / Cut Specification	15x15mm, 20x20mm, sliced form, whole form, or customized
Slice Thickness	According to buyer requirements before production
Processing Method	Sorting, trimming, washing, slicing or dicing, IQF freezing, metal detection and packing
Appearance	Clean, individually frozen, no serious clumping and no visible foreign matter
Texture	Typical oyster mushroom texture after proper frozen storage and cooking
Flavor & Odor	Typical oyster mushroom flavor, free from off-odor
Foreign Matter Control	Controlled sand, growing medium residue, plant debris and visible foreign matter
Defect Tolerance	Controlled broken pieces, discoloration, irregular cuts and unsuitable cap or stem condition according to order standard
Packing	1x10kg/carton, 400gx20 bags/carton, 1kg retail bag, 500g retail bag, foodservice packing or private label packing
MOQ	12 tons; mixed container can be discussed
Shelf Life	24 months
Storage	-18°C or below
Supply Period	Year-round supply based on production plan and frozen storage
Export Markets	USA, Canada, Europe, Israel and other markets
Loading Port	Qingdao / Xiamen / other China port according to order arrangement
Lead Time	Around 15-21 days after deposit and specification confirmation
Payment Terms	T/T, L/C at sight, negotiable by order
Shipment	Sea shipment under frozen condition
Document Support	Specification sheet, COA, packing list, commercial invoice, certificate support, loading photos and third-party inspection support if required

Processing Flow

We prepare IQF frozen oyster mushrooms through a controlled factory process. Product form, size, slice thickness, packing and document requirements are confirmed before production.

Step	Control Focus
Raw Material Receiving	We inspect freshness, color, cap condition and stem condition.
Sorting	We remove unsuitable raw material and separate material by form and order standard.
Trimming	We trim unsuitable cap or stem parts before washing and cutting.
Washing	We reduce sand, growing medium residue and visible impurities.
Slicing / Dicing	We match slice thickness or dice size according to your confirmed specification.
IQF Freezing	We freeze products individually to support free-flowing frozen handling.
Metal Detection	We support metal foreign matter control before finished packing.
Packing	We pack into bulk, foodservice, retail or private label formats according to order.
Cold Storage and Container Loading	We store and load frozen goods at -18°C or below under cold-chain requirements.

Quality Control Focus

QC Point	Purpose
Raw Material Freshness Control	Review freshness, color and raw material condition before processing.
Cap and Stem Condition Control	Reduce unsuitable cap, stem and broken material before cutting.
Slice Thickness Control	Keep sliced products consistent for hot pot, soup, stir-fry and ready meal use.
Color Sorting	Reduce obvious discoloration and unsuitable color variation.
Cleaning and Sand Control	Reduce sand, growing medium residue and surface impurities.
Foreign Matter Control	Reduce plant debris, visible impurities and unwanted material before packing.
Broken Piece Control	Control broken pieces and irregular cuts according to order standard.
Metal Detection	Support metal foreign matter control before finished packing.
Packing Inspection	Check net weight, inner bag, carton mark, label and batch information.
Cold Storage	Keep products stored at -18°C or below before loading.

Request Oyster Mushroom Specification and Packing Support

Send us your required product form, color, slice thickness, cut size, packing, order quantity, destination port and document requirements. We will review the specification and prepare quotation support for your frozen oyster mushroom order.

Send Inquiry Details Download Product Catalog

Packaging Options

Packing Type	Common Format	Suitable Buyer
Bulk Carton	1x10kg carton	food processors, distributors and industrial buyers
Retail Carton	400gx20 bags/carton	supermarket, retail frozen mushroom packs and private label buyers
Retail Bag	1kg retail bag or 500g retail bag	retail distribution and brand programs
Foodservice Packing	Foodservice pack or customized carton arrangement	restaurants, catering suppliers and foodservice distributors
Private Label Packing	Private label packing and customized carton mark	importers, brand owners and retail programs

Applications

Hot Pot and Soup

We support foodservice distributors with sliced oyster mushroom for hot pot, soup and restaurant supply.

Stir-fry Mix

We prepare sliced or diced forms for frozen vegetable processors and Asian-style frozen meal ingredients.

Ready Meals

We help prepared food factories match product form, texture, packing and export documents for frozen meal production.

Frozen Vegetable and Mushroom Mixes

We support processors and distributors with oyster mushroom ingredients for mixed frozen mushroom and vegetable programs.

Retail Frozen Mushroom Packs

We can discuss retail bags, carton marks, labels, barcodes and private label packing for supermarket and brand customers.

Foodservice Bulk Supply

We supply bulk carton formats for restaurants, catering suppliers and central kitchens that need stable frozen mushroom inventory.

Industrial Food Processing

We support sauce, soup base, prepared food and further processing projects with whole, sliced or diced formats.

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IQF frozen oyster mushroom bulk pack

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Document Support

For export orders, GreenLand-food can support your purchasing team with product specification sheet, COA, packing list, commercial invoice, certificate-related documents, loading photos and shipment information. Third-party inspection support can be discussed according to order requirements.

Document	Purpose
Specification Sheet	Confirm product form, size, slice thickness, packing and quality standard.
COA	Support batch quality review before shipment.
Packing List	Confirm carton quantity, net weight and shipment details.
Commercial Invoice	Support export documents and customs declaration.
Certificate Support	Support HACCP, ISO, BRC, HALAL, KOSHER or other requirements according to order.
Loading Photos	Support container loading condition review before shipment.
Third-party Inspection Support	Can be discussed when the order or destination market requires it.

Traceability and Batch Control

Each frozen oyster mushroom shipment can be managed with raw material batch, sorting record, production batch, packing record, COA, carton mark and loading record. We connect batch information with packing and export documents to support shipment review.

Raw Material Batch

Sorting Record

Production Batch

Packing Record

COA

Carton Mark

Loading Record

Frozen Oyster Mushroom Processing Video

This video helps you review the frozen mushroom processing environment, slicing support, IQF freezing, packing and quality control. Product-specific processing or loading videos can be discussed during order communication.

Why Choose GreenLand Food

Support Area	How We Support Your Order
Frozen Mushroom Processing Experience	We support frozen mushroom processing, packing and export order preparation for international food buyers.
Cleaning and Foreign Matter Control	We control cleaning, sand, visible impurities, broken pieces, metal detection and frozen storage.
Bulk / Retail / Private Label Packing	We can prepare 10kg bulk cartons, 400g / 500g / 1kg retail bags, foodservice packs and private label packing.
Export Document and Cold Chain Support	We support specification, COA, certificate-related documents, loading photos and frozen shipment handling.

frozen oyster mushroom processing factory

frozen mushroom cleaning and IQF equipment

frozen mushroom supplier certificate support

GreenLand frozen mushroom export customers

FAQ for IQF Frozen Oyster Mushrooms

1. Can you supply whole, sliced and diced frozen oyster mushrooms?

Yes. We can supply whole, sliced and diced IQF Frozen Oyster Mushrooms according to your order requirements.

2. What size or slice thickness can you provide?

Common diced sizes include 15x15mm and 20x20mm. Slice thickness and other customized specifications can be discussed before production.

3. How do you control sand and foreign matter?

We control raw material inspection, sorting, trimming, washing, foreign matter inspection and metal detection before finished packing.

4. Can you support retail and private label packing?

Yes. We can discuss 400g, 500g, 1kg bags, carton marks, labels, barcodes and private label packing according to your market requirements.

5. What documents can you provide before shipment?

We can support specification sheet, COA, packing list, commercial invoice, certificate-related documents, loading photos and shipment information.

Send Your Frozen Oyster Mushroom Inquiry

Tell us the product form, color, slice thickness, cut size, packing, order quantity, destination port and required documents. We will review the specification and prepare quotation support for your frozen oyster mushroom order.

Download GreenLand-food Frozen Food Product Catalog

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Technical specification · reference schedule

Frozen Sliced Oyster Mushrooms

We review the selected form, grade, process and packing against the technical schedule below. Published and TDS values are specification references for order review. External benchmarks apply only within their stated scope. Acceptance is governed by the signed SKU specification; the identified lot COA reports actual measured results.

Form: Slices Product category: Frozen Oyster Mushrooms

01 / Physical & Sensory

Parameter	Specification / reference	Verification & order basis
Dimensions - Grey Oyster Mushroom	Grey color type, whole or slicedPublished reference	Confirm method, representative sample and acceptance basis in the signed specification.
Dimensions - White Oyster Mushroom	White color type, whole or slicedPublished reference	Confirm method, representative sample and acceptance basis in the signed specification.
Related form options	Whole, sliced, diced, grey oyster mushroom, white oyster mushroom, bulk pack and retail packPublished reference	The selected form shown above governs this schedule. Other published forms require their own cut, process and acceptance specification.
Origin	ChinaPublished reference	Reconcile source declaration, intake lot and shipment documents.
Color	Grey, white, or natural color according to raw material typePublished reference	Compare with the approved sensory reference using the stated frozen/thawed/prepared condition.
Size / Cut Specification	15 × 15 mm, 20 × 20 mm, sliced form, whole form, or customizedPublished reference	Measure a defined frozen sample with caliper or size gauge; report distribution and tolerance.
Slice Thickness	According to buyer requirements before productionPublished reference	Measure a defined frozen sample with caliper or size gauge; report distribution and tolerance.
Appearance	Clean, individually frozen, no serious clumping and no visible foreign matterPublished reference	Compare with the approved sensory reference using the stated frozen/thawed/prepared condition.
Texture	Typical oyster mushroom texture after proper frozen storage and cookingPublished reference	Compare with the approved sensory reference using the stated frozen/thawed/prepared condition.
Flavor & Odor	Typical oyster mushroom flavor, free from off-odorPublished reference	Compare with the approved sensory reference using the stated frozen/thawed/prepared condition.
Thickness & intact-cut inspection	Measure thickness separately from fruit/cap/root diameter or piece length; classify broken cuts and end pieces.	Use a thickness gauge/caliper and separate mass or count for intact and broken fractions.

02 / Physicochemical & Residue Controls

Parameter	Specification / reference	Verification & order basis
Codex reference: mineral impurities	≤0.2 % m/mExternal reference Codex	Residue insoluble in hydrochloric acid after ashing; use relevant CXS 234-1999 method. No fixed sample mass stated in §3.3.6. Only a single-species quick-frozen edible-fungus SKU meeting CXS 38 §2.1.12: cleaned, washed and blanched before freezing. Confirm botanical species and blanching route; unblanched supply is outside this definition.
Prepared yield / water release	Evaluate thawed or cooked yield under one agreed preparation protocol; differentiate natural exudate from added water or loose ice.	Report initial mass, preparation conditions, drained edible mass and yield percentage.
Pesticide residue schedule	Named active ingredients and commodity-specific limits are selected for the destination market. EU source	Link farm spray history, laboratory LOQ and batch result to the destination MRL. EU database is one market reference; apply the actual destination rule.
Lead, cadmium and other contaminants	Apply the limit for the exact commodity and processed form in the destination market. EU source	State analyte, preparation basis, method, LOQ and lot result. Do not transfer a fresh-commodity limit to a processed form without the required assessment.

03 / Microbiological Criteria

Parameter	Specification / reference	Verification & order basis
Hygiene-indicator panel	Select aerobic count and relevant Enterobacteriaceae, coliform or E. coli indicators for the declared process and intended use. Codex	Report each quantitative result in CFU/g, method/reporting limit, sample plan and lot identity.
Pathogen acceptance programme	Define Salmonella and Listeria criteria when applicable to the destination, ready-to-eat status and buyer programme. Codex	State analytical portion, sample-unit plan, method and detected/not-detected reporting; identify the treatment and release basis.
Yeast & mould enumeration	Select separate yeast and mould criteria for the ordered grade and process; assess storage stability with the applicable product data. Codex	Report yeast and mould separately in CFU/g using validated matrix-specific methods.
Acceptance schedule	Select the test panel and limits by intended use (ready-to-eat or further processing), product form and destination. EU source	State organism, analytical method, sample mass and n/c plan; report actual lot results. A universal APC, coliform, Salmonella or Listeria limit is not assigned to every frozen product.

04 / Freezing & Cold Chain

Parameter	Specification / reference	Verification & order basis
Storage	-18°C or belowPublished reference	Confirm method, representative sample and acceptance basis in the signed specification.
Separation & loose-ice assessment	Keep inherent moisture, loose ice and permanently frozen clusters as separate inspection categories.	Weigh separated loose ice and welded clusters against initial sample mass; distinguish natural paired pieces or blocks.
Product thermal centre	−18°C or colder after freezing and thermal stabilization; maintain the agreed frozen distribution condition.External reference Codex	Probe the thickest representative pack and retain storage/transport temperature records. Codex quick-frozen reference; selected product form and route must be frozen.
Frozen condition at dispatch	Hard frozen, correctly sealed and coded, without thaw/refreeze evidence or excessive loose ice. Codex	Check pack integrity, free-flow or block condition as declared, carton condition and loading temperature.

05 / Pack Size & Shelf Life

Parameter	Specification / reference	Verification & order basis
Pack options - Bulk Pack	1 × 10 kg cartonPublished reference	Check approved pack drawing, calibrated scale and production records.
Pack options - Retail Pack	400 g, 500 g, 1 kg bag, or customizedPublished reference	Check approved pack drawing, calibrated scale and production records.
Packing	1 × 10 kg/carton, 400gx20 bags/carton, 1 kg retail bag, 500 g retail bag, foodservice packing or private label packingPublished reference	Check approved pack drawing, calibrated scale and production records.
Shelf Life	24 monthsPublished reference	Verify unopened-pack validation, declared storage condition and production/best-before coding.
Declared net contents	Verify each selected pack format against the artwork and applicable quantity-control rule. Codex	Calibrated checkweigher or scale; defined sample and tare.
Shelf-life basis	The labelled period applies only to its validated pack and continuous stated storage condition. Codex	Review stability study or approved shelf-life file and production-date code.

06 / Process Controls

Parameter	Specification / reference	Verification & order basis
Processing Method	Sorting, trimming, washing, slicing or dicing, IQF freezing, metal detection and packingPublished reference	Check the approved product flow, line settings and identified production record; validate numerical critical limits within the site HACCP plan.
Raw-material preparation checks	Confirm species/colour programme; define edible stem proportion and whole versus sliced style.	Verify the selected product flow and the relevant trimming, sorting and pretreatment record.
CCP designation	Use the site-approved HACCP plan to identify true CCPs and their validated critical limits. Codex	Check hazard analysis, monitoring, deviation and corrective-action records. A quality-control step is not automatically a CCP.

07 / Ingredients, Additives & Allergens

Parameter	Specification / reference	Verification & order basis
Added glaze / coating declaration	Declare any intentionally added water glaze, syrup, oil or coating and the measurement basis; loose ice is assessed separately.	Verify formula/addition records; agree a deglazing or coating test and net-content basis where applicable.
Ingredient statement	List every ingredient and its declared role for the selected SKU; verify any added sugar, oil, coating, seasoning or glazing medium.	Approved formula and supplier declarations.
Additive use	Declare any colour-protection agent, acidulant or other additive by ingredient and maximum permitted use for the target market. NHC standard	Check approved formula, actual addition record and market-specific additive category. GB 2760-2024 applies to China; export rules are checked separately.
Allergen and cross-contact assessment	Declare inherent allergens and assess shared-line cross-contact from the actual facility schedule. FDA	Review line matrix, cleaning validation and buyer label approval. Do not claim a shared-line allergen or allergen-free status without facility evidence.

08 / Defects & Foreign Matter

Parameter	Specification / reference	Verification & order basis
Foreign Matter Control	Controlled sand, growing medium residue, plant debris and visible foreign matterPublished reference	Inspect a defined representative sample; record count or mass basis and disposition.
Defect Tolerance	Controlled broken pieces, discoloration, irregular cuts and unsuitable cap or stem condition according to order standardPublished reference	Inspect a defined representative sample; record count or mass basis and disposition.
Codex reference: organic impurities of vegetable origin	≤0.02 % m/mExternal reference Codex	Vegetable-origin admixture as defined in §2.2.6; no fixed sample mass stated in §3.3.6. Only a single-species quick-frozen edible-fungus SKU meeting CXS 38 §2.1.12: cleaned, washed and blanched before freezing. Confirm botanical species and blanching route; unblanched supply is outside this definition.
Codex reference: maggot damage for cultivated fungi	total ≤1; serious subset ≤0.5 % m/mExternal reference Codex	Serious damage means ≥4 maggot holes; separate damaged material by mass; no fixed sample mass stated. Only a single-species quick-frozen edible-fungus SKU meeting CXS 38 §2.1.12: cleaned, washed and blanched before freezing. Confirm botanical species and blanching route; unblanched supply is outside this definition. Applies only when raw material is documented as cultivated.
Intrinsic defect classification	Root/substrate, coarse attachment tissue, dark damaged edges and broken caps.	Record each defect class separately by count or mass; state sample size, denominator and combined-limit rules.
Hazardous foreign matter	No foreign matter detected in the defined inspection sample; reject and investigate any finding.External reference Codex	Define visual-inspection sample size and detector challenge in the signed quality schedule. "None detected" is a sampling statement, not an absolute guarantee of zero particles.

09 / Packaging Materials & Label

Parameter	Specification / reference	Verification & order basis
Food-contact pack	Specify inner-contact material and obtain the applicable food-contact compliance declaration. NHC standard	Review film structure, supplier DoC, migration evidence and actual intended conditions. GB 4806 series is China-specific; EU export also checks Regulations 1935/2004 and 10/2011.
Carton and seal integrity	Define carton stacking strength, bag seal and puncture resistance for the confirmed net weight and pallet plan. EU source	Inspect pack drawing, compression/seal test and shipment configuration.
Label verification	Match product name, ingredient/allergen statement, net weight, lot/date, shelf life and storage instruction to the destination artwork. Codex	Approve artwork against the signed specification and destination rules.

10 / Detection & Traceability

Parameter	Specification / reference	Verification & order basis
Species and source identity	Link declared edible species, cultivated/wild status and source lot to the packing lot; retain component identity for a blend. Codex	Reconcile source declaration, intake record and final ingredient statement.
Foreign-body detector	Validate Fe, non-Fe and stainless-steel challenge pieces for the actual product, aperture, pack and line; record the proven sensitivity. Codex	Challenge at defined start, changeover, interval and end points; retain rejection records. Do not copy generic detector sizes into a plant capability claim.
Lot traceability	Link input source lot, processing run, packaging code, test records, frozen storage and shipment to one finished lot. Codex	Trace one sample lot forward and backward in a recorded mock recall. Recall speed is stated only when the site has a validated target and record.

Order approval: Confirm the selected form and grade, ingredient formula, intended use, destination market, packing, sampling plan and test panel. The signed specification controls acceptance; the identified lot COA reports actual results.

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Oyster Grey Mushroom