How to store jam? 

In this brief guide, we will answer the question “How to store jam?” with an in-depth analysis of how to prevent mold growth on jams. Moreover, we will also discuss the health benefits of using jam. 

Jam is one of those foods that, when we think about it, we have no idea where to put it. Do most fruit jams need to be kept refrigerated all the time because they contain preservatives (such as sugar and salt)? Or does the presence of preservatives imply that they can be stored in the pantry?

How to store jam? 

Following are some of our expert tips to store your jam properly:


Unopened jars can be stored in the pantry or cabinet. Jams should be refrigerated once they’ve been opened. Manufacturers advise that after opening fruit spreads and jams they should be refrigerated. They should not be ingested if they have been left out for more than 48 hours. 

Store in a cool, dark spot 

The cool temperature is the most effective approach to prevent bacteria from spreading and the inside of the jar from condensing, resulting in moisture production. Mold will not grow on the outside of the jars if they are stored in a dry environment.

Tight lid

You don’t have to completely close the jam when closing it for the first time because the seal will suck in the lid. In any case, it’ll be a secured seal. However, once you’ve opened the jam, make sure you always close it properly to avoid air exposure. 

Use clean knife 

To prolong the shelf life of jams it is recommended to use a clean knife or spoon while dripping into the bottle of jam. 

How to tell if your jam has gone bad?

As the jam ages, it may darken in colour, taste a little tarter, and liquid may form at the top of the jam. If the product has mold, it should be thrown and not ingested.

Mold or yeast growth, as well as any odd odour, are common symptoms of jam spoiling. Remove any jam that smells like yeast, alcohol, or anything else fermented. If there are any organic growths on the surface, do the same thing. If everything appears to be in order and smells good, take a bite.

Why do jams get moldy? 

Spores can be found in the air around us. This implies you’re exposing the contents of the jar to mold spores every time you open it. Spores are drawn to moisture, so if your jam has started to condense or has outlived its shelf life, a thin coating of water will form. That is an ideal environment for mold to grow and thrive.

How to prevent mold growth on jams? 

To prevent the growth of mold on jams, make sure to follow the below-mentioned tips:

Use clean utensils 

Make sure you use a clean tool while removing jam to spread on a piece of bread. By clean, we imply that it hasn’t already been used for another purpose, such as a clean, unused knife or spoon.

Never lick the jam spoon or knife before returning it to the jam. You’ll introduce germs to the previously clean jam, resulting in more than just mould growth. Get a new spoon and a clean one.

Use sterilized jars 

To prevent mold growth on your jam make sure to use sterilized jars to remove all the contaminations from the jar before storing the jam in it. 

Avoid air exposure

Make sure that your jam is sealed tightly to avoid air exposure. Because air exposure will cause molds to grow on your jams. 

What is the shelf life of jam in a jar?

The act of canning does not ensure that food is preserved indefinitely. However, heavier sugar items, such as jams and fruit bottled in syrup, can last for up to two years. Your product should be alright as long as the seal is good and the lid appears to be correctly concave.

What are the health benefits of using jams? 

Sugar is found in jams, which swiftly combines with the blood and provides energy. They also help with heart problems. They keep you from sweating if you have an illness that causes you to sweat. People consume natural jams to stay healthy.

Jam created with healthy fruit chunks can help lower your risk of stroke, heart attack, and other cardiovascular disorders. Jam contains the majority of the nutritional advantages of fruit, including heart-healthy, cancer-fighting antioxidants.


In this brief guide, we have answered the question “How to store jam?” with an in-depth analysis of how to prevent mold growth on jams. Moreover, we have also discussed the health benefits of using jam. 


What was missing from this post which could have made it better?

Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.