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How long does "genuine" maple syrup, unopened, plastic last?
"Genuine" Maple syrup, unopened, plastic keeps for about 18 to 24 months in the refrigerator. Counted from when you open or store it, unless the package says otherwise.
| Where | How long |
|---|---|
| Pantry | 2 years |
| Refrigerator | 18 to 24 months |
Storage times are the USDA FoodKeeper guidance for quality and safety, not a guarantee; a printed use-by date on the package comes first. Source: USDA FSIS FoodKeeper (CC0), fetched 2026-10-27, category Shelf Stable Foods.
How Known uses thisWhen a receipt lists "genuine" maple syrup, unopened, plastic, Known estimates an expiry from the purchase date and typical shelf life and shows which rule it used, for example "7-day rule". Shelf-stable staples get no date at all.
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