ShelfLife
Does mustard go bad?
An unopened jar of mustard keeps 1 to 2 years in the pantry. Once opened, it keeps about 1 year in the fridge. Mustard is acidic and rarely spoils, but it dries out, darkens and loses its kick.
| Food | Fridge | Freezer | Pantry |
|---|---|---|---|
| Mustard | —Opened: 1 year | — | 1–2 yearsfrom purchase |
| Dry ground mustard | — | 1–2 years | 6 months |
Fridge at 4 °C (40 °F) or colder, freezer at −18 °C (0 °F). Freezer times are for best quality: food kept frozen stays safe, but slowly loses taste and texture. These times are USDA guidance, not a guarantee. When in doubt, throw it out.
How to tell if mustard has gone bad
- Dry, crusty or darker mustard has lost flavor: stir it, and use it if it smells fine.
- Liquid separating on top is normal: stir it back in.
- Mold, or a sour, fermented smell: throw it out.
How to store mustard
- Keep unopened jars in a cool, dark cupboard.
- Once opened, keep mustard in the fridge with the lid tightly closed: it keeps its heat and color longer.
- Use a clean knife or spoon to avoid crumbs and moisture in the jar.
Can you freeze mustard?
You can, but there's no need: opened mustard keeps about a year in the fridge, and freezing can make it separate.
Questions
Does mustard need to be refrigerated after opening?
It won't usually spoil at room temperature, but the fridge keeps its flavor and heat for about a year. At room temperature it loses its strength much sooner.
Can you use mustard after the date?
Usually yes, if there's no mold or off smell. It may be milder and darker.
How long does mustard powder last?
About 6 months in the pantry for the best flavor, and 1 to 2 years in the freezer.
Add condiments to ShelfLife with the date you opened them.
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Storage times: USDA FoodKeeper (Food Safety and Inspection Service), public domain. Text by ShelfLife.