Does Maple Syrup Go Bad: Best Ways To Prevent Spoilage

Maple syrup – this is one thing that most of us have at home. Its sweet flavor makes it perfect for a variety of uses, especially for pancakes and waffles. Sometimes, we end up buying a lot and we are left wondering – does maple syrup go bad? The rest of this post will answer this question.

Does Maple Syrup Go Bad?

Unfortunately, yes, maple syrup can go bad! A lot of people may think that since it is processed and once it is in a container, it will be good forever. The truth is, it can still expire, which makes it important to pay attention to the signs of spoilage.

How Long Does Maple Syrup Last

When the maple syrup is left in the pantry unopened, it can last for a year. This is also its shelf life when it is kept in the refrigerator. When in the freezer, on the other hand, it can last indefinitely until you see visible signs of spoilage.

For 100% pure maple syrup, there is a risk that it will spoil once opened or when the container becomes contaminated. There are instances wherein mold will grow, which is the most obvious indication that your maple syrup should end up in the trash.​

How To Know If Maple Syrup Turns Bad

One of the easy ways to check if the maple syrup is still good is to check the box for its expiration date. In addition, mold will also most likely appear on the top surface. The thickness of the syrup makes it less prone to the growth of mold.

By smelling the maple syrup, you can also easily tell if it has already spoiled or not. Of course, the smell should be sweet, just like honey. If there is a weird smell, this is an indication that it is spoiled. Also, when there is a sour taste, this also means that it is no longer fit for consumption.

The appearance of mold can happen even if you store the maple syrup in the fridge. On the other hand, it can be quicker if you leave the syrup at room temperature. Yeast and fermentation can also happen, but this is a rarer occurrence compared to molding.

​For some people, they immediately discard the maple syrup once they see mold on the top. However, you can just remove the top and transfer it to a clean container. Nonetheless, not a lot of people would do this because of the fear of contamination of the rest of the syrup.

The suggestion above may bring reluctance for most people, but even the Massachusetts Maple Producers Association recommends doing this. They noted that it is harmless, but still, for many of us, it is normal to hesitate to resort into this.

If in case you decide to just scrape off the moldy part on the top of the syrup, you should also bring it to a boil at a temperature of 190 degrees Fahrenheit. Do not go over as this will cause the syrup to burn.​

How to Make Maple Syrup Last Longer


If you live on your own or if you do not use your maple syrup often, chances are, you will be interested in knowing how to store it properly. Storage and handling are two of the most important things to make sure your syrup will last long and still taste good.

When buying maple syrup, the first thing you should do is to check the label. Look at the expiration date. Buy one that is not due to expire anytime soon. Also, read the instructions from the manufacturer and follow it religiously when it comes to its proper storage.

After using the maple syrup, make sure that the cap is tightly placed. If not, this is going to attract air inside and can quicken its spoilage. You might also want to consider transferring it to a container with an airtight seal.​

If maple syrup is originally in a tin container, transfer it immediately to a glass jar when stored. However, make sure that the jar is clean. It will also help to submerge it in boiling water first to sanitize it, which will prevent the growth of contaminants.

According to Vermont Maple Sugar Makers’ Association, it will also help to keep the syrup in the freezer and not just in the fridge. This is a good way to preserve its flavor after some time. The good thing is that with the consistency of the syrup, it will not freeze.

When using a spoon to scoop out syrup from the container, make sure that it is clean. Do not use a spoon that has just been straight into your mouth. When your saliva gets in contact with the maple syrup, there is a higher likelihood that it will spoil.​

One thing that you can do is to invest in a high-quality maple syrup dispenser. Make sure it is cleaned before transferring the syrup. Also, see to it that the material used is BPA-free plastic to avoid health risks.

Trudeau Syrup Dispenser is one of the best products you might want to consider having. It has a compact size and spring activated lever, which means that it will automatically close once you are no longer holding it.


Now that you have reached the end of this post, we hope that you have learned something new about maple syrups. Always check the label and look for signs of spoilage. In a nutshell, here are the most important things mentioned above:

  • Yes, maple syrup can go bad.
  • Because of its thickness, mold will appear only most likely on the top.
  • Keeping the syrup in the freezer is one excellent way to make it last longer without altering its flavor.
  • Investing in a maple syrup dispenser can also be a good idea. Trudeau Syrup Dispenser is one excellent choice you might want to consider.

Is there anything else that you would like to add? How do you store your maple syrup? Feel free to write a comment below.

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