Allergen matrix: right on the day the recipe changes, or wrong

An allergen matrix is the table that maps every dish or product you sell against the allergens regulators require to be declared, with a mark where each is present. It is how a kitchen answers a customer’s question consistently, and how staff answer it the same way whoever is asked.

The matrix is easy to build and hard to keep true. It is correct on the day it is made and wrong the first time a supplier substitutes an ingredient, a chef changes a recipe, or a special is added without anyone updating the sheet — and the customer relying on it has no way to know.

What the allergen matrix has to contain

• Every item sold, including specials, sides, sauces, garnishes and drinks — not just main dishes.
• A column for each regulated allergen in your jurisdiction, using the official list rather than a general one.
• A clear mark for present, and a distinct treatment for "may contain" arising from genuine cross-contamination risk.
• The source of the information: supplier specifications, not assumptions from a recipe.
• A version and date, so the printed copy in the kitchen can be checked against the current one.
• The named person responsible for keeping it current.

Precautionary "may contain" labelling deserves care. Applied to everything it becomes noise that customers learn to ignore, which is worse than useless; applied where a real, assessed risk exists it is exactly the right disclosure.

Keeping it true

1. Tie the update to the trigger, not the calendar: any recipe change, new dish, or supplier substitution updates the matrix before the dish is served.
2. Check supplier specifications at every delivery of a changed product — "same product, new formulation" is a common cause of incidents.
3. Keep one authoritative copy, and make the kitchen copy show its version so an old print-out is obvious.
4. Train staff to consult the matrix rather than recall it, and to say so to the customer.
5. Record allergen questions and how they were answered where the risk is high.

Verbal reassurance from memory is the single most common factor in serious allergen incidents. The safe answer is always to check the current matrix in front of the customer — and a system that makes that quick is worth more than one that makes the document look impressive. Inspectors ask about it too, and it feeds the confidence-in-management part of the food hygiene rating.

Labelling is a separate obligation

The matrix supports what staff tell customers. Where food is pre-packed for direct sale, jurisdictions increasingly require a full ingredient list with allergens emphasised on the label itself, and that is a distinct requirement with its own rules — one that a matrix alone does not satisfy.

Because the matrix is a table that changes with the menu and must be reproducible as it was on a given date, it belongs in a versioned sheet rather than in a laminated print-out. Ettex Sheets keeps it with its history, so the version in force last month can be shown and the kitchen copy can be reprinted from the source. What is in each dish remains a question for the kitchen and its suppliers — the document only makes the answer consistent and current.