Can You Use Soy Sauce After the Best-Before Date?
Written by Jordan Morley · Reviewed against FSA date labelling guidance · Last updated 28 October 2026
Yes. Soy sauce has a best-before date, which is about quality rather than safety, so it is usually fine to use after the date. Check that it looks and smells normal.
Why it's usually fine past the date
A best-before date is the maker's estimate of how long soy sauce stays at its best. After it, the flavour may flatten and the colour darken; it doesn't suddenly become unsafe. The FSA says food is generally safe to eat after its best-before date, and using your own judgement also cuts food waste. Throw it away if you see: mould or a sour, off smell.
You can also check the calorie content of soy sauce alongside its safety information.
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Common questions
Does soy sauce expire?
It is salty and keeps for a long time. Over months the flavour flattens and the colour darkens, which is a quality change. Refrigerating opened bottles helps if you use it slowly.
How can I tell if soy sauce has gone off?
Look for mould or a sour, off smell. If none of those apply and it looks, smells and tastes normal, it is fine.
What actually changes after the best-before date?
The flavour may flatten and the colour darken. That's a drop in quality, not a safety problem (FSA).
What is the difference between use-by and best-before?
Use-by is about safety: do not eat after it. Best-before is about quality: the food is often fine after it, just past its best. Check which one is on your label.
Related answers
Primary source: FSA date labelling guidance.
General information only, not medical advice: see the medical disclaimer. Feeling unwell after eating something? Contact NHS 111 or your GP.