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Printed allergen declaration form with tick boxes beside a sealed sample bag of dehydrated onion on a desk

QUALITY & COMPLIANCE May 22, 2026 21 min read

Allergens, Gluten and Dehydrated Onion: What the Declaration Should Say

Pure dehydrated onion contains none of the fourteen substances the EU requires to be declared, and a buyer still needs a proper allergen statement, because the statement is about the plant as much as the product. The regulatory lists, what onion carries and does not, the sulphite exception, cross-contact and its control, gluten-free claims, fructan intolerance, the declaration format an auditor accepts, and the pet-food note.

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Two dishes of white onion flakes side by side on slate, one flat white and one warm ivory, with a small spoon

QUALITY & COMPLIANCE Mar 26, 2026 22 min read

Sulphites in Dehydrated Onion: Why They Are Used, EU Limits and Sulphite-Free Options

Sulphite kept dried onion white for sixty years; the allergen label ended that for European buyers. What sulphites do in onion, how a plant applies them and what residue stays, the EU additive and allergen rules and the 10 mg/kg threshold, other markets, why the standard test gives false positives on onion, how plants keep onion white without it, cross-contact risk, who still wants sulphited product, and the specification wording.

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