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Homemade Blueberry Jam Recipe: Summer in a Jar

There’s nothing quite like the taste of homemade blueberry jam Sweet, tangy, and bursting with summer flavour. Whether you’re spreading it on toast, swirling it into yoghurt, or gifting it to friends, this simple recipe will help you capture the taste of summer in a beautiful glass jar.


With just a few ingredients and the right jars from Sen5es, you can make a batch that looks as good as it tastes. Let’s get started!


homemade blueberry jam recipe

Ingredients

  • 1kg fresh or frozen blueberries

  • 800g granulated sugar

  • 1 lemon (juice and zest)

  • 1 tsp unsalted butter (optional, to reduce foaming)


Equipment


Need help sterilising your jars? Read our guide: How to Sterilise Jars for Jams and Preserves


cooking blueberry jam

Method

Step 1: Prepare Your Jars

Before you start cooking, sterilise your jars to make sure your jam stays fresh for longer. You can do this by washing them in hot soapy water, then heating them in the oven at 120°C for 10–15 minutes.

Keep the jars warm until you’re ready to fill them.


Step 2: Cook the Blueberries

Place your blueberries in a large saucepan over low heat. Add the lemon juice and zest, then cook gently for 5–10 minutes until the berries start to break down and release their juices.

If you prefer a smoother texture, you can mash the fruit lightly with a potato masher.


Step 3: Add the Sugar

Stir in the sugar until it dissolves completely. Increase the heat to bring the mixture to a rolling boil. Continue boiling for 10–15 minutes, stirring often, until the jam thickens.

To test if it’s ready, place a small spoonful on a cold plate — if it wrinkles when pushed with your finger, it’s done.


Step 4: Fill and Seal

Remove the jam from the heat and skim off any foam. Carefully pour the hot jam into your sterilised jars, leaving a little space at the top. Wipe the rims clean, seal tightly with lids, and leave to cool.

Once cool, label your jars with the date and contents.


Blueberry jam on toast

Storage Tips

Store your jam in a cool, dark place for up to 12 months. Once opened, keep it in the fridge and use within a few weeks.


Your homemade blueberry jam also makes a lovely gift. Wrap your jar with ribbon, add a handwritten label, or present it in a Sen5es presentation box for a professional touch.


Conclusion

Making blueberry jam at home is easy, satisfying, and a great way to use up summer fruit. With high-quality glass jam jars from Sen5es, your preserves will stay fresh and look beautiful — whether you’re keeping them for yourself or sharing them with friends and family.


Shop our full range of glass jars today and get ready to start preserving summer’s sweetest flavours!

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