Properly stored, pure maple syrup can last for a long time in the refrigerator. Its natural sugars act as a preservative, helping to prolong its shelf life. Here are some general guidelines for how long maple syrup lasts in the refrigerator:
Unopened Maple Syrup: Unopened, pure maple syrup can last for several years in the refrigerator. Most manufacturers print a "best-by" or "use-by" date on the bottle, which is a good indicator of its freshness. However, even after the date has passed, the syrup may still be safe to consume if it has been stored properly and shows no signs of spoilage.
Opened Maple Syrup: Once you open a bottle of maple syrup, its shelf life decreases. However, if you store it correctly, it can last for many months to a year. Proper storage involves keeping the syrup tightly sealed in its original container or transferring it to an airtight container to prevent contamination and avoid absorbing odors from the refrigerator.
Signs of Spoilage: If you notice any mold, off odors, unusual texture, or fermentation in the maple syrup, it should be discarded. Properly stored maple syrup, though, is less prone to spoilage compared to other liquids due to its high sugar content.
Remember that these time frames are general guidelines, and the quality and freshness of the syrup can vary based on how it's handled and stored. Always use your judgment, and if you're unsure about the syrup's condition, it's better to err on the side of caution and replace it with a fresh bottle.