How long does Syrup last after opening?

Updated 2026-08-10 · Free · No sign-up

Once opened, Syrup keeps about 6 months in the fridge. Unopened, it keeps about 1 year.

6 months

6 months opened in the fridge, against 1 year sealed in the pantry. Green is what this situation leaves you; husk is what it spends.

Source: USDA FoodKeeper v128 · Category: Pantry staples

How long Syrup keeps

SituationKeeps for
Unopened · pantry1 year
Opened · fridge6 months

Only situations with a published figure are listed. A blank isn't “forever” — it means no reliable number is published for it.

Storage

How to tell if Syrup has gone bad

USDA FoodKeeper v128 publishes no spoilage note for Syrup specifically, so these are the general signs for pantry staples — never taste something to test it. When in doubt, throw it out.

Air and warmth are what shorten an opened item's life — the right container buys back the days the packaging gives up once the seal's broken.

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FAQ

How long does Syrup last after opening?

About 6 months refrigerated at 40°F (4°C) or below, according to USDA FoodKeeper v128. Refrigerate it once it's open.

Does Syrup need to be refrigerated after opening?

Yes — keep Syrup at 40°F (4°C) or below once it's open. Cool, dry pantry unopened; refrigerate at 40°F (4°C) or below after opening.

How can you tell if Syrup is bad?

Look for: A rancid, paint-like, or musty smell; Bulging, leaking, deeply dented, or rusted cans; Insects or webbing in dry goods; Mould or discoloration. Those are the general signs for pantry staples — USDA FoodKeeper v128 publishes no spoilage note for Syrup specifically. Never taste something to test it — when in doubt, throw it out.

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