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How long does jam last?
High sugar makes jam last for months after opening.
in the fridge
6–12 months
Sugar preserves it for many months chilled.
Jam storage times compared
| Storage | Keeps for | |
|---|---|---|
| ❄️ Fridge | 6–12 months |
Times assume a fridge at or below 4°C / 40°F and a freezer at -18°C / 0°F.
How to tell if jam has gone bad
- Mold on the surface
- Fermented, alcohol smell
- Darkening
Storage tips
- Use a clean spoon to avoid introducing mold.
- Refrigerate after opening even if the label allows pantry storage.
Frequently asked questions
- Can you eat jam with mold on top?
- No — discard the whole jar, as mold roots run deeper than they look.