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How to Store Homemade Jam

There’s nothing quite like the taste of homemade jam. Whether you’ve spent a summer afternoon picking fresh berries or found a great deal of fruit at your local farmer’s market, turning that bounty into a delicious jam can be so rewarding.

However, all your hard work can go to waste if your jam isn’t stored correctly. Luckily, we’re here to help!

In this post, we will guide you through the essential steps to properly store your homemade jam, ensuring it stays fresh and tasty for as long as possible.

Glass jars with homemade raspberry jam on a wooden table.

Store homemade jam by first cooling and sealing it in sterilized jars. Unopened jars should be kept in a cool, dark place and can last up to a year. Opened jars should be refrigerated and consumed within a month.

the Importance of Proper Jam Storage

Before we dive into the ‘how,’ let’s clarify why proper jam storage matters.

Preserving Flavor and Texture

The aim of storage is to preserve your jam’s delicious taste and texture for as long as possible. When stored incorrectly, your jam can lose its vibrant flavor, and its consistency can deteriorate.

Avoiding Spoilage

Proper storage can prevent harmful bacteria and mold from spoiling your jam, ensuring it’s safe to eat for longer.

How to Store Freshly Made Jam

Once you’ve made your jam, here’s how to store it right away.

Proper Jar Sterilization

Before filling, make sure your jars are sterilized to kill off any bacteria or yeast. This can be done by washing it in hot, soapy water and then placing it in a warm oven for about 10-15 minutes.

Filling the Jars

Fill your sterilized jars while the jam and jars are still hot. Leave a 1/4-inch headspace at the top, then seal the jar while it’s still hot.

Cooling and Checking Seals

Let the jars cool at room temperature. As they cool, the lids should create a vacuum seal. Check the seals by pressing down on the center of the lid – if it doesn’t pop back, it’s sealed.

Best Practices for Storing Your Homemade Jam

Storing your homemade jam properly is crucial to keep it at its best. From the moment your jars are sealed, the way you store them can make a significant difference in the jam’s taste, texture, and longevity.

So, let’s walk through the best practices for storing your homemade jam.

Storing Unopened Jars

Unopened jars of your homemade jam should be stored in a cool, dry, dark place, like a pantry or cellar. This ensures the temperature and light exposure remain consistent, which is essential for preserving your jam’s quality.

Avoid areas where there could be extreme temperature fluctuations, as these can compromise the jar’s seal and accelerate spoilage. A cupboard that’s away from direct heat sources, like your oven or stovetop, is a great choice.

Storing Opened Jars

Once you’ve opened a jar of your homemade jam, its storage needs change. An opened jar should always be stored in the refrigerator to slow down the growth of any bacteria or mold.

Make sure to always use a clean spoon when serving your jam to avoid introducing any unwanted bacteria. Properly refrigerated, your opened jar of homemade jam will generally last about a month.

But remember, if you notice any signs of spoilage, like a change in color, mold, or an off smell, it’s best to err on the side of caution and discard the jam.

In your journey to perfect homemade spreads, you may also come across jelly, which differs from jam in texture and preparation method. If you’re curious to know more about this, check out our post on the differences between jam and jelly.

Long-Term Storage: The Freezing Option

For even longer storage, consider freezing your homemade jam. Here’s a quick guide on the maximum storage times for different locations:

Storage LocationMaximum Storage Time
Pantry1 year
Refrigerator (opened)1 month
Freezer1-2 years

Remember to leave extra headspace if you plan to freeze your jam, as it will expand when frozen.

How to Identify If Your Jam Has Gone Bad

Here are some signs that your jam may have spoiled:

  • Mold: Visible mold on the jam or inside the lid is a sure sign of spoilage.
  • Smell: If the jam has an off or fermented smell, it’s best to discard it.
  • Texture: If your jam has become overly runny or has large clumps, it might be spoiled.
  • Taste: As a last resort, you can taste a small amount. If it tastes off, throw it away.

If you’re using fruits like raspberries and strawberries to make your homemade jam, it’s essential to ensure they’re in good condition before you start.

If you have an abundance and need to freeze raspberries or strawberries before you have a chance to make them into jam, the process is simple in my step-by-step guide.

Spoiled or overripe fruits can negatively impact your jam’s flavor and shelf life. If you’re unsure about how to tell if your raspberries or strawberries have gone bad, we’ve got detailed guides to help you. Take a look at our posts on how to tell if raspberries are bad and strawberries are bad.

Frequently Asked Questions About How To Store Homemade Jam

If properly canned and stored in a cool, dark place, homemade jam can last up to a year in the pantry.

Sterilizing jars helps to kill any bacteria or yeast that could cause your jam to spoil.

Yes, you can freeze homemade jam. Be sure to leave some headspace in the jar to allow for expansion. Frozen jam can last for 1-2 years.


Preserving the fresh, homemade taste of your jam is easy when you know the right steps. By properly sterilizing your jars, sealing them while hot, and storing them in the right conditions, you can enjoy your homemade jam for months or even years to come. And remember, always trust your senses when checking if the jam has spoiled.

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