Sourcing frozen fruit fails in a predictable order: the specification is written after the samples arrive, the samples are judged by eye, and the contract inherits every ambiguity. This guide runs the sequence in the order that actually works, using frozen berries as the worked example. The same logic applies to frozen vegetables and to stone fruit.
You will need roughly one season to move from first contact to a stable supply relationship. Compressing that is possible; skipping steps is not.
Step 1: Write the specification before you talk to anyone
A specification you write yourself is a filter. A specification you assemble from supplier datasheets is a description of whoever answered first. At minimum, fix:
- Product and form. Species, variety group if it matters, whole or pieces, IQF or block.
- Grade and calibre. Numeric ranges, not adjectives.
- Defect tolerances. Percentages by weight for each named defect, with the sampling plan.
- Microbiological limits. Anchored to Regulation (EC) No 2073/2005 as amended, plus any customer-specific limits.
- Chemical limits. Pesticide residues under Regulation (EC) No 396/2005; heavy metals where relevant.
- Packaging. Liner, carton, net weight, pallet pattern, labelling under Regulation (EU) No 1169/2011.
- Temperature regime. Storage and transport, with the tolerance for excursions written down.
- Documentation. Which certificates travel with each lot.
Step 2: Qualify suppliers on evidence, not on presentation
Ask for four things before a sample is discussed:
- A current BRCGS certification or IFS Food certificate, with the certificate number so you can verify it in the scheme directory yourself.
- The scope statement on that certificate. A certificate covering a different site or a different product category is worth nothing to you.
- The last two audit dates and any open non-conformities that are relevant to your product.
- A traceability statement describing how a finished carton maps back to a grower lot.
Verify certificates in the scheme’s own directory. A PDF is not evidence; a directory entry is.
Step 3: Sample against the specification, not against expectation
Request samples in the same packaging you intend to buy, shipped under the same temperature regime. A hand-carried sample in a cool box tells you what the factory can make on its best day, not what will arrive on a pallet.
Assess in this order:
- Arrival condition. Frost inside the liner, ice sheets, clumping, carton deformation.
- Frozen assessment. Calibre distribution, foreign material, colour uniformity.
- Controlled thaw. Fixed protocol, fixed time, fixed temperature. Record drip loss, colour, texture and aroma.
- Application trial. Run the fruit through your actual process. Bake it, blend it, dose it.
- Laboratory panel. Micro and residues from an accredited laboratory, on your account, not the supplier’s.
Sample at least twice from different production dates. One sample measures a batch; two measure consistency, which is the thing you are actually buying.
Step 4: Price the whole landed cost
| Cost element | Frequently forgotten |
|---|---|
| Ex-works price per kilogram | Confirm whether it is net of glaze |
| Packaging | Printed cartons and custom liners carry a minimum run |
| Reefer transport | Depends on route and season, not just distance |
| Customs duty | Depends on tariff classification and current arrangements |
| Inspection and laboratory | Per lot, budget it as a line |
| Storage on arrival | Frozen storage is charged per pallet per period |
| Yield loss in your process | Grade and calibre feed directly into this |
Two offers that differ by five percent per kilogram can invert once yield loss and inspection costs are included. Model landed cost per usable kilogram, not per delivered kilogram.
Step 5: Contract the things that go wrong
Write the failure modes into the contract while everyone is still optimistic:
- Temperature deviation: who bears the cost, and what evidence settles it. Name the data logger type and who downloads it.
- Out-of-specification lots: rejection, discount or rework, and who decides.
- Documentation delay: the demurrage clock does not care whose fault it is.
- Volume flexibility: berry harvests move with the weather, so build a tolerance band rather than pretending the forecast is firm.
- Incoterms: use Incoterms 2020 and name the exact delivery point. FCA at a named terminal and FCA at the seller’s premises are different contracts.
Common mistakes
- Judging fruit by frozen appearance only. Most defects appear after thawing.
- Approving a supplier on a certificate without reading the scope.
- Negotiating price before the specification is closed. The supplier will quote to the cheapest reading of an ambiguous spec, correctly.
- Single sourcing a weather-dependent crop. One frost event in one region should not stop your line.
- Leaving glaze undefined. It is the most common source of quiet weight disputes.
A practical example
A bakery buyer approved a raspberry at 12 percent broken fruit tolerance because the frozen sample looked clean. In production, the broken fraction released enough juice to discolour the batter, and the visual defect rate at retail rose. The specification was correct; the assessment method was wrong. The fix was to add a controlled thaw and a bake trial to the approval protocol, which changed the supplier decision on the next tender.
FAQ
How long does supplier approval usually take?
Plan on three to six months from first contact to first commercial container if laboratory testing and an audit review are included. Harvest windows can compress or extend this.
Should I audit the site myself?
A scheme certificate covers the baseline. A second-party audit is worth it when the product is high risk, the volume is significant, or your own customers require it. Otherwise a documented desktop review plus a virtual site walk is usually proportionate.
What minimum order quantity should I expect?
It depends on packaging and on whether the SKU is standard or private label. Standard bulk cartons start lower than printed retail packs, which carry a print minimum. See what MOQ means in B2B food sourcing.
Can I mix several berry types in one container?
Usually yes, if they share a temperature regime and the supplier can palletise them separately. Mixed loads complicate traceability paperwork, so agree the lot structure in advance.