IN Brief:
- Tesco recalled 270g Finest Caesar & Smoked Bacon Coleslaw with a 4 September 2026 use-by date.
- Some packs may contain Four Cheese Potato Salad, which includes mustard not declared on the coleslaw packaging.
- The incident demonstrates how packaging verification and line-clearance failures can create allergen risks even when recipes are correct.
Tesco has recalled a batch of Finest Caesar & Smoked Bacon Coleslaw after a packaging error created a potential mustard-allergen risk, showing how a product identity failure at the end of a production line can become a food-safety incident.
The Food Standards Agency allergy alert covers 270g packs with a use-by date of 4 September 2026. Some packs carrying the coleslaw label may instead contain Tesco Finest Four Cheese Potato Salad.
The potato salad contains mustard, while the coleslaw packaging does not declare that allergen. Consumers with a mustard allergy have therefore been advised not to eat affected packs and to return them to a Tesco store.
The recall is tightly defined by product, pack size, and date code, but the underlying manufacturing issue is broader. The alert describes a mismatch between the food inside the pack and the information presented to the consumer rather than an error in the recipe itself.
That shifts attention towards product identification, packaging control, line clearance, and changeover procedures. Chilled prepared-food factories frequently manufacture several similar products using common trays, lids, sleeves, labels, conveyors, and filling equipment, increasing the risk that packaging intended for one specification remains available when production switches to another.
The products involved here illustrate that problem. Coleslaw and potato salad occupy closely related chilled categories and can pass through comparable packing environments, while their ingredient declarations and allergen profiles remain different.
A correctly manufactured potato salad becomes incorrectly labelled the moment it is sealed or sleeved in packaging belonging to another recipe. Allergen controls upstream may have worked as intended, but the consumer is still left with inaccurate safety information.
Mustard is one of the allergens that must be appropriately declared when present as an ingredient in prepacked food. The final packaging therefore forms part of the allergen-control system rather than serving only as branding and presentation.
Factories typically manage this risk through combinations of line clearance, controlled packaging issue, barcode scanning, vision inspection, recipe-linked label selection, coding checks, material reconciliation, and independent verification at start-up and changeover.
Automation can reduce the opportunity for human error but does not eliminate the need for procedural control. A scanner is effective only when every packaging variant has been coded correctly, while vision systems depend on reliable reference data and appropriate rejection logic.
Physical line clearance remains equally important. Unused sleeves, lids, labels, or printed film from the previous run can re-enter production if they are left beside equipment or returned incorrectly after a changeover.
The FSA alert does not identify the precise mechanism that caused the Tesco mix-up, so attributing the incident to a specific machine, worker, or supplier would go beyond the available evidence. The confirmed outcome is that a product containing mustard reached packaging that did not declare it.
Tesco issued its recall notice and contacted relevant allergy organisations. Once affected product may have reached consumers, the incident moves beyond withdrawal from the distribution chain and into recall, requiring stores, traceability systems, customer communications, and stock-control processes to work together.
A tightly defined recall depends on accurate batch information. Product identity, pack size, and use-by coding allow a business to remove affected stock without unnecessarily withdrawing a much wider range, reducing waste and disruption while protecting consumers.
The production lesson is that allergen assurance continues through every operation after the ingredients have been mixed. Lidding, sealing, sleeving, coding, labelling, case packing, and pallet identification all have to preserve the link between the recipe manufactured and the information ultimately read by the consumer.
Changeovers are particularly vulnerable because several conditions alter at once. Product may still be moving through part of a line while packaging materials are being exchanged elsewhere, creating the possibility of overlap if clearance and verification are not sequenced correctly.
High-SKU chilled production makes those controls increasingly important. Shorter campaigns and greater product variety increase the number of packaging changes, and every additional change creates another point at which the wrong artwork or product identity can be introduced.
The Tesco recall affects a limited batch, but the hazard is common across prepared-food manufacturing. A food can meet its recipe and processing specification and still become unsafe for a particular consumer if the final label describes something else.
Packaging accuracy is consequently a food-safety control in its own right. The last few metres of a line have to preserve the work carried out by formulation, allergen segregation, cleaning, and traceability systems throughout the rest of the factory.
