Shelf Stable Foods
How long does an unopened glass bottle of maple syrup last?
Sealed in glass, real maple syrup keeps 4 years in the pantry — and USDA marks it indefinitely in the fridge, which is where it belongs from the day you break the seal.
How long does it keep?
| Pantry | 4 years |
|---|---|
| Fridge | Indefinitely |
Can it sit out?
Unopened, unopened maple syrup in glass is shelf-stable. Once opened, treat it as perishable — the FSIS 2-hour rule applies.
Perishable food left at room temperature for more than 2 hours should be thrown out — 1 hour if it’s 90°F or hotter (a picnic, a hot car, a summer kitchen).
How to tell if unopened maple syrup in glass has gone bad
- Fuzzy mold rafts floating on the surface
- A winey, fermented smell as the cap comes off
- Syrup gone cloudy or hazy through the bottle
When in doubt, throw it out.
Sugar crystals in the bottom of an old bottle aren’t spoilage — stand the bottle in warm water and they dissolve back in.
Quick answers
How long does an unopened glass bottle of maple syrup last?
Sealed in glass, real maple syrup keeps 4 years in the pantry — and USDA marks it indefinitely in the fridge, which is where it belongs from the day you break the seal.
How long can unopened maple syrup in glass sit out?
Sitting out isn’t the safety question for unopened unopened maple syrup in glass — once opened, the FSIS 2-hour rule applies. Perishable food left at room temperature for more than 2 hours should be thrown out — 1 hour if it’s 90°F or hotter (a picnic, a hot car, a summer kitchen).