How long does Maple syrup last in the pantry?
Turning the range into a date
Maple syrup (unopened, plastic) keeps 2 years in the pantry. Each kind gets its own dated rows here, 3 rows across the 2 the USDA lists under this name, because a date is only worth printing against the window it belongs to.
"Genuine" Maple syrup, unopened, glass
- In the pantryUse by4 years after the day you stored it
"Genuine" Maple syrup, unopened, plastic
- In the pantryUse by2 years after the day you stored it
- In the fridgeUse by18 months to 24 months after the day you stored it
The USDA rates 2 kinds of this separately
The USDA files 2 separate entries under this name — unopened, glass and unopened, plastic — and they do not keep for the same time: "Genuine" Maple syrup, unopened, plastic holds 2 years outside the freezer, "Genuine" Maple syrup, unopened, glass holds 4 years.
Built to sit on a shelf
"Genuine" Maple syrup, unopened, plastic is built to sit. It keeps 2 years outside the freezer. Among the 244 foods the USDA also gives a pantry figure, it keeps longer than 92% of them. It is long enough that the date it went into storage matters more than anything you can judge by looking at it. On the same shelf it sits 12 of 70, between Almond oil at 2 years and Sesame oil at 2 years.
Every storage figure the USDA publishes for this item
The USDA gives this item a pantry and a refrigerator figure and no freezer figure at all, the pattern behind 79 of the 466 foods in the data. The source also indexes it as unopened, glass and plastic.
"Genuine" Maple syrup, unopened, glass
- In the pantry4 years
- In the fridgeIndefinitely
"Genuine" Maple syrup, unopened, plastic
- In the pantry2 years
- In the fridge18 months to 24 months
Where the USDA answers in words instead of days
1 of the nine slots the USDA keeps for this item holds an answer that is not a number, and an answer in words is still an answer: in the fridge it answers Indefinitely, so kept that way the food does not run out of time, though it can still lose quality.
Can you freeze maple syrup?
The USDA prints no freezer time for maple syrup. Frozen at 0 °F any food stays safe; whether it is still good after thawing is a matter of quality. Keep the fridge at 40 °F or below and the freezer at 0 °F.
How to tell if maple syrup has gone bad
Go by the date first: maple syrup keeps 2 years in the pantry. Insects, a musty or rancid smell, clumping from damp, or a swollen can mean it goes out. Any dish you cook with it follows the 2-hour rule, 1 hour above 90 °F.
Sources: USDA FSIS: the danger zone USDA FSIS: freezing and food safety FDA: are you storing food safely FoodSafety.gov: the FoodKeeper app.
Is it still safe to eat, or just past its best?
The answer at the top of this page reads 2 years in the pantry. The USDA rating this place at all is the USDA saying "Genuine" Maple syrup, unopened, plastic keeps there, so the figure rates how good it will be. Past it, whether it has gone bad is yours to judge by look and smell: this window rates quality, not the day it turns hazardous.
It is past the date. Now what?
Say the calculator above puts "Genuine" Maple syrup, unopened, plastic past its 2 years in the pantry window. Past that the calendar stops deciding and the food itself does. A rancid, paint-like smell in a nut, an oil or a seed, mold around the neck of a bottle, or a swollen can mean it goes out whatever the date says.
The whole rule, including the cases the source does not cover, is set out under what to do when the date has passed.
Two places, and one of them is the wrong one
The USDA rates two places for "Genuine" Maple syrup, unopened, plastic in one state and they disagree: 2 years in the pantry against 18 months to 24 months in the fridge. This page answers with the pantry, the longer of the two. Both figures are the USDA's own, so this is a choice of where to put the food rather than a disagreement about how long it keeps.
Items that behave the same way
All 6 of the 6 items nearest "Genuine" Maple syrup, unopened, plastic keep exactly as long as it does, 2 years, so the ranking around it is a tie rather than an order.
Where these numbers come from
Every storage time on this page is the USDA’s own published figure from the FoodKeeper data, one of the 9 it keeps per food, reproduced unchanged and never an estimate of ours. Where the USDA lists several kinds under one name, each kind keeps its own windows, and the page names the kind its answer is for. The dates and multipliers are ours, computed from those ranges.
Source: USDA FoodKeeper, retrieved 1 September 2026. Found a figure that does not match the source? Tell us on the contact page. How the site is built is on the method page.
Comparisons and the place in the category are computed for "Genuine" Maple syrup, unopened, plastic, which is the kind the plain name means here, chosen kind by kind rather than by the order the source happens to list them in.
USDA index terms: Genuine Maple syrup, glass, plastic, syrup, unopened
KeepsUntil is an independent reference built on public USDA data. It is not affiliated with, endorsed by, or connected to the U.S. Department of Agriculture or the Food and Drug Administration. Whether a given window is a safety limit or a quality window is stated on the page that prints it.