The ingredient list

Preservatives need a function

Updated October 2026

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What it says The forms it gives Separate is the operative word Which products here it reaches It can be a short phrase A bought blend can carry one Check it at the same time as the colors The exemption exists but do not assume it References

The name is half the declaration. The rule also wants the job described.

What it says

A food to which a chemical preservative is added shall, except when exempt, bear a label declaration stating both the common or usual name of the ingredient and a separate description of its function.

The forms it gives

"Preservative", "to retard spoilage", "a mold inhibitor", "to help protect flavor", "to promote color retention". Those are the examples in the rule, and they are the vocabulary to use rather than invent around.

Separate is the operative word

The function is a separate description, not an implication. Listing an ingredient by name and relying on the reader to know it is a preservative does not satisfy the paragraph.

Which products here it reaches

Anything in this group with an added chemical preservative, which in practice means some colorants, some decor products and occasionally a specialty flour or sugar blend. Dry does not mean preservative free.

It can be a short phrase

The function description is usually three or four words in parentheses, so the cost is space rather than complexity. On a 50 mL jar that space is real and it is worth laying out for deliberately.

A bought blend can carry one

If you buy a colorant or a decor mix with a preservative in it, the preservative is in your food and your label carries the declaration. That is another reason the supplier specification matters more than the marketing sheet.

Check it at the same time as the colors

Both questions are answered from the same document: the full composition of every bought ingredient. Asking once and recording the answer covers the color naming, the preservative function and the allergen check together.

The exemption exists but do not assume it

The paragraph opens with "except when exempt", pointing at 21 CFR 101.100. That is a real carve-out and it is narrower than it sounds, so it is worth reading rather than relied on from memory.

References

21 CFR 101.22(j), which requires a food containing an added chemical preservative to declare both the common or usual name of the ingredient and a separate description of its function, giving "preservative", "to retard spoilage", "a mold inhibitor", "to help protect flavor" and "to promote color retention" as examples. law.cornell.edu

21 CFR 101.22(k), on declaring coloring in the statement of ingredients. Paragraph (k)(1) requires a color additive subject to certification to be declared by the name listed in part 74 or part 82, with "Lake" included where it is a lake; (k)(2) allows "Artificial Color", "Artificial Color Added" or "Color Added" only for colors not subject to certification and not otherwise required to be named. law.cornell.edu

Written from federal statute and regulation, not from a kitchen. Food labeling has more parts than three sections, and a state cottage food program may add or subtract requirements for a local sale. Nothing here is clearance for a specific label, and whether an ingredient is cleared for food use is a question about that ingredient.