How long does mustard last?
Short answer: Mustard keeps 1 year once opened in the fridge and 1–2 years in the pantry.
Storage chart
| Type | Pantry | Fridge | Freezer |
|---|---|---|---|
| mustard | 1–2 years | 1 year (after opening) | — |
| dried, ground | 6 months | — | 1–2 years |
Fridge at 40°F (4°C) or colder, freezer at 0°F (−18°C). Freezer times are for best quality; food kept frozen stays safe indefinitely.
Storage tips
- Refrigeration ensures that commercial sauces and condiments stay fresh for a longer period of time. Shelf-stable commercial mustard is safe when stored at room temperature after opening. Quality, not safety, is the reason the labels on these products suggest that they be refrigerated after opening.
Keep it longer
Keep the fridge at 40°F (4°C) or colder and the freezer at 0°F (−18°C). Write the date on containers when you open or cook something.
Common questions
How long does mustard last in the fridge?
1 year once opened in the refrigerator at 40°F (4°C) or below, according to USDA FoodKeeper data.
How long does mustard last at room temperature?
1–2 years in a cool, dry pantry.
How can I tell if mustard has gone bad?
Throw it out if you see mold, a slimy texture, an off smell or an odd color. For anything perishable, go by the storage time rather than smell: bacteria that cause food poisoning don't usually change how food looks or smells.
More condiments, sauces & canned goods
Source: USDA FoodKeeper data (USDA Food Safety and Inspection Service). Updated 2026-10-13. General information, not medical advice. When in doubt, throw it out.