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Allergen matrix

How to keep food labels up to date

Every label is correct on the day it is made. Keeping thirty of them correct for two years is a different job, and it is the one nobody plans for.

Reviewed against official guidance.SourcesNot legal advice.

What triggers a label change

TriggerHow urgentWhat to do
An allergen is added to an ingredientImmediatelyQuarantine affected stock, then relabel
A supplier reformulates, no allergen changeBefore the next batchUpdate the ingredient, reprint
You change a recipeSame dayUpdate quantities, check the order, reprint
You substitute a brandBefore it goes outRead the new declaration first
You add a new productBefore it goes on saleBuild the label, add it to the matrix
Nothing in particularQuarterlyFull read-through

The first row is the only one that is an emergency. Treating everything as an emergency is how a routine stops being followed.

A routine that fits around service

At delivery

Whoever checks the delivery in reads the declaration on anything new or anything substituted, and photographs it. Thirty seconds per item, and it is the single highest-value habit on this page.

When a recipe changes

The label changes the same day, not at the end of the week. A recipe change with a stale label is the most avoidable failure there is.

Weekly

Five minutes: anything substituted this week that has not been checked? Any product whose label was printed before its last recipe change?

Quarterly

The read-through below.

The quarterly read-through

Take the list of everything you sell, and for each one:

  • Does the label match the recipe you are actually making now?
  • Is every ingredient still supplied by the supplier you recorded, with the declaration you hold?
  • Are the compound ingredients still broken out, with their allergens emphasised inside the brackets?
  • Does the list still run heaviest first?
  • Is the printed label still legible on the current packaging?
  • Does the allergen matrix agree with the label?

For a twenty-product range this is an hour or two. Put a date on it when you finish, so the next person knows when it was last done.

Stopping the matrix drifting

The usual failure

Someone changes a recipe and updates the label. The allergen matrix lives in a different file, so it does not get updated. Now the label and the matrix disagree — which is worse than having only one of them, because nobody knows which to believe.

The fix is structural rather than a reminder:

  • Generate the matrix from the same ingredient data as the labels, so updating one updates both.
  • If you must keep it separately, make “update the matrix” part of the recipe-change step rather than a task of its own.
  • Date every version, and keep the one before.

What to keep

  • Supplier declarations, dated, for every bought-in ingredient — photographs are fine.
  • A version history of each label, so you can answer a question about food you sold months ago.
  • A change log — what changed, when, which products, who checked.
  • The dated allergen matrix.

None of this is heavy. It is a folder and a habit, and it is what turns “we think it’s right” into something you can show.

Surviving staff changes

The most fragile labelling system is one that lives in one person’s head. When they leave, the knowledge goes and the routine quietly stops.

  • Write the routine down — one page is enough.
  • Make sure at least two people know how labels get made and reprinted.
  • Keep ingredient records somewhere shared, not on one laptop.
  • Prefer a system where printing a correct label is the easy path. If the right way is also the quick way, it survives a busy Saturday.

When a change does land, the step-by-step is here: what to do when a supplier changes an ingredient.

Questions

How long should I keep old labels?
Long enough to answer a question about food you have sold. Many small businesses keep a version history indefinitely because it costs nothing to do so — and a question about a product sold six months ago is exactly when you want it.
Do I need a formal documented procedure?
Not by law for labelling itself. But an inspector asking how you manage allergen information is easier to answer with a written routine than with a description of what you generally do.

Official sources

Everything on this page traces back to these. Where they and we disagree, they are right — tell us and we'll fix it.