Condiments
How long does Tamarind Paste / Concentrate (opened) last?
High confidence
Quality concern
How long does Tamarind Paste / Concentrate (opened) last? fridge 3–6 months, pantry 1–3 months, freezer 9–12 months. Plus spoilage signs, sources, and an unopened-vs-opened note.
Fridge
3–6 months
Pantry
1–3 months
Freezer
9–12 months
Sealed / unopened: 1 year (pantry, unopened, cool and dark)
Signs Tamarind Paste / Concentrate (opened) has gone bad
- Fuzzy white or green surface mold.
- Fermented, yeasty, or beer-like odour.
- Slimy patches or gas bubbles.
Still good if
- Darkening in colour over time with no mold and a normal sour aroma.
- A thin dry crust on top — scrape off if what's below smells clean.
Discard immediately if
- Any mold or fuzzy growth
- Off, rotten, or alcoholic smell
- Diluted paste left at room temperature for long
Why guidance varies
High natural tartaric/citric acidity and (in commercial jars) preservatives make concentrate very stable, but surface mold can still form if it's diluted, contaminated, or stored warm. Homemade pastes spoil faster.
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Sources for this answer
- B CSIR-CFTRI — Preservation studies of tamarind concentrates and acidulated pastes.
- A USDA FoodKeeper — Acidic condiments keep longer but still need proper storage.