Mustard vs Ketchup:
Which Is Gluten-Free?
Two condiment-aisle basics. Ketchup is almost always gluten-free, while some mustards use malt vinegar or wheat-based thickeners — so mustard needs a label check.
Ketchup is the safer celiac choice — Ketchup is gluten-free, while Mustard depends on the brand or preparation.
Verdicts last reviewed July 2026 · based on FDA gluten-free labeling rules and Celiac Disease Foundation guidance
Mustard
Most yellow mustard is gluten-free. Watch for wheat flour in some Dijon mustards and specialty mustards that may use beer or malt vinegar.
Watch out for:
- Some Dijon mustards use wheat flour
- Beer mustard contains barley
- Honey mustard dressings may contain wheat
Ketchup
Yes, most ketchup is gluten-free. Major brands like Heinz, Hunt's, and French's are all safe for celiacs.
Watch out for:
- Very rare: specialty ketchups with malt vinegar
- Unusual artisanal ketchup ingredients
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