This Blackberry Freezer Jam is a favorite of berry lovers! It's perfect for spreading on toast, biscuits, or even stirring into your morning yogurt or oatmeal. Best of all, it requires no canning whatsoever!
Crush blackberries in a large bowl with a potato masher (or in a food processor) until no large pieces remain. If you prefer a jam with less seeds, press half of the crushed mixture through a fine sieve with the back of a spoon until all the juice has been extracted. Combine the juice with the crushed fruit.
Transfer mashed berries to a small stockpot over medium heat. Add sugar and stir well to combine.
Stir frequently as the fruit mixture heats, checking to see if the sugar has dissolved. Remove from the heat as soon as it does.
Combine the pectin and lemon juice in a small bowl and stir well to combine. Add the pectin mixture to the jam gradually, stirring to combine. Continue stirring for 3 minutes.
Fill prepared containers to within ½ inch of the tops. Let the jam stand at room temperature for 24 hours to complete the set. Jam is now ready to use!
Notes
After making the blackberry freezer jam, carefully transfer it into clean, airtight containers, leaving about ½ inch of space at the top to allow for expansion during freezing. Securely place the lids on the containers and let the jam stand at room temperature for 24 hours to set.Once set, you can store the jam in the refrigerator for up to 3 weeks or in the freezer for up to 1 year. If frozen, be sure to thaw the jam in the refrigerator before using it.Always use a clean utensil when scooping out the jam to avoid introducing any bacteria that could cause spoilage.