Old Fashioned Blackberry Jam (2024)

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Make old fashioned blackberry jam from scratch just like Grandma did with this quick and easy recipe. It doesn’t even need pectin!

I had my first blackberry jam making lesson in my friend Lynn’s sunny kitchen – 20 years ago! I remember her patiently showing me how to make jam the way her mother-in-law taught her. This method doesn’t require any pectin – just berries and {lots of!} sugar. Today was the perfect day for some “jammin’”. Here’s how we did it…

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How to Make Old Fashioned Blackberry Jam without Pectin

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Gather Your Recipe and Canning Supplies:

  • up to 4-6 cups mashed fresh blackberries (they must be fresh)
  • up to 4-6 cups sugar (to equal the measurement of the mashed blackberries)

Prepare the jars & lids by sterilizing them.

Jars can be sterilized by running them through the dishwasher and drying in high heat. Or, my method is to wash and rinse them in very hot water and set them on a tea towel to air dry. I avoid handling them with my bare hands (to prevent germs), so I flip them over with my canning tongs.

Place the lids in a saucepan with water covering them. Put them on to boil while you are doing all the rest. {Keep an eye on them so they don’t boil dry.}

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Prepare for blackberry jam making by getting your jars, lids, and rings ready.

Rinse and mash the fresh blackberries.

Rinse the fresh berries by running them under water in a colander. {You MUST use fresh berries for this method.}

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Rinse the blackberries under cold water in preparation for making this blackberry jam recipe.

Mash the berries with a vegetable or potato masher until there are no big seeds.

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Use a potato masher to squish the blackberries in preparation for making blackberry jam.

Measure out the sugar.

Measure out an equal part of sugar to match the exact amount of mashed berries. (**NOTE: Use only between 4-6 cups mashed berries per batch.)

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This blackberry jam recipe calls for equal parts mashed blackberries and sugar.

Cook the berries.

Pour mashed berries into a large saucepan and put over high heat. Stir constantly with a large spoon until it boils. Boil for 3 minutes.

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Use a large cooking pot and stir constantly while cooking this blackberry jam recipe.

Add sugar to the boiling blackberries.

Once the berries have boiled 3 minutes, slowly add all the sugar while stirring constantly.

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Once the blackberries have boiled for 3 minutes, add in the previously measured sugar.

Cook the berries and sugar together.

Bring the mixture to a boil again, while continuing to stir constantly. Boil for 3 minutes more.

Bring out the natural pectin by whisking together.

Remove from heat and beat with a whisk for 3 minutes. {The “beating” forces the natural pectin out of the berries.}

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Beating the cooked blackberry jam with a whisk for 3 minutes brings out the natural pectin in the blackberries, so you don’t need to add any pectin in this old fashioned blackberry jam recipe!

Pour into jars and place lids on tightly.

Pour into sterilized jars. {Don’t overfill. Just pour up to the narrow part of the jar.}

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I find Tupperware’s plastic mixing bowl with pour spout perfect for pouring blackberry jam into sterilized jars.

Using tongs, place a hot lid on each jar. Screw the rings on tightly. {Yep, it’s a little hot on your hands!}

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Screw the lids tightly on with the jam jar lids. Let them sit and cool on the counter and let them seal.

Each batch makes approximately 8 jam jars-full.

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Canning blackberry jam in the Summer allows you to enjoy it all year long!

Once you are all finished, just leave them sitting on your counter. One of my favourite sounds is the “pop” of the jar lids sealing… Once they have all sealed, I store them in a cupboard in the basem*nt.

FAQ: Do you use a hot water bath canning method for this jam recipe?

I have never used the hot water bath canning method for this recipe. However, it is a highly debated topic in my comment section!;) If you feel safer using the hot water method, I’m sure it would work great.

How do you store this jam when the jars are sealed?

I store canned jam in my basem*nt where it is cool and dark.

How long does home canned jam last?

It is recommended that canned jam be used up within a year of being canned.

For other jam and berry recipes, you may want to check these out:

  • A collection of 39 Best Berry Recipes
  • Want to can jam and more? This round-up has canning jam recipes as well as canning vegetables recipes, pickles, and more – just like Grandma’s recipes!
  • These blackberry muffins can be made with any berry -fresh or frozen – and we LOVE them!
  • My friend Rachel has the BEST blackberry quick breads recipe with lemon!

To access the whole archive of yummy recipes, click here, or if you’re looking for recipes for large quantity cooking, click here.

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And if you want to see more real life behind the scenes action, be sure to come join me on my @harbourbreeze Instagram Channel!

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How to Make Old-Fashioned Blackberry Jam

Prep Time: 15 minutes

Cook Time: 20 minutes

Total Time: 35 minutes

Can your own blackberry jam using this old fashioned jam recipe method. Using fresh blackberries, you just mash, cook, beat, and pour into jars!

Ingredients

  • up to 4-6 cups mashed fresh blackberries, they must be fresh
  • up to 4-6 cups sugar, to equal the measurement of the mashed blackberries

Instructions

  1. Prepare the jars & lids by sterilizing them.Jars can be sterilized by running them through the dishwasher and drying in high heat. Or, my method is to wash and rinse them in very hot water and set them on a tea towel to air dry. I avoid handling them with my bare hands (to prevent germs), so I flip them over with mycanning tongs.
  2. Place the lids in asaucepanwith water covering them. Put them on to boil while you are doing all the rest. {Keep an eye on them so they don’t boil dry.}
  3. Rinse and mash the fresh blackberries.Rinse the fresh berries by running them under water in a colander. {You MUST use fresh berries for this method.}
  4. Mash the berries with a vegetable or potato masher until there are no big seeds.
  5. Measure out the sugar.Measure out an equal part of sugar to match the exact amount of mashed berries. (**NOTE: Use only between 4-6 cupsmashedberries per batch.)
  6. Cook the berries.Pour mashed berries into a large saucepan and put over high heat. Stir constantly with a large spoon until it boils. Boil for 3 minutes.
  7. Add sugar to the boiling blackberries.Once the berries have boiled 3 minutes, slowly add all the sugar while stirring constantly.
  8. Cook the berries and sugar together.Bring the mixture to a boil again, while continuing to stir constantly. Boil for 3 minutes more.
  9. Bring out the natural pectin by whisking together.Remove from heat and beat with a whisk for 3 minutes. {The “beating” forces the natural pectin out of the berries.}
  10. Pour into jars and place lids on tightly.Pour into sterilizedjars. {Don’t overfill. Just pour up to the narrow part of the jar.}
  11. Using tongs, place a hot lid on each jar. Screw the rings on tightly. {Yep, it’s a little hot on your hands!}
  12. Each batch makes approximately 8jam jars-full.
Nutrition Information:

Serving Size: 1 grams
Amount Per Serving:Unsaturated Fat: 0g

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Old Fashioned Blackberry Jam (2024)
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