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homemade blackberry jam

5.0

(17)

www.alphafoodie.com
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Prep Time: 10 minutes

Cook Time: 10 minutes

Total: 30 minutes

Servings: 40

Cost: $0.42 /serving

Ingredients

Remove All · Remove Spices · Remove Staples

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Instructions

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Step 1

Place the fresh berries and sugar in a bowl for a few hours (or overnight). During this time, the berries will macerate, and the sugar begins to dissolve - thus needing less time to cook before the sugar fully dissolves, allowing the berries to stay more in-tact.

Step 2

First, mash the blackberries and add with the lemon juice to the pan.  Simmer for a few minutes to break the fruit down, and then press through a sieve or jelly bag into a bowl. Then simply place 2-3 spoonfuls of the seeds back into the jam or remove the seeds entirely for more of a blackberry jelly recipe (which uses the blackberry juice only).

Step 3

Start by very lightly mashing the blackberries in a bowl (or the pan) using a potato masher or similar tool.

Step 4

Then, in a medium heavy-based pan, add the sugar, blackberries, lemon juice, and pectin. Heat on low-medium heat, stirring constantly, to completely dissolve the sugar. This will eliminate the risk of grainy/sugar crystal formed jam later on.

Step 5

Bring the mixture to a boil (a rolling boil that can't be stirred down) at high heat for five minutes, without stirring. Use a spoon to make sure the jam isn't sticking to the bottom of the pan. If it is, then you can mix a couple of times and reduce the heat slightly.

Step 6

To check that the jam has reached setting point, either use a thermometer or the saucer test*. If using a thermometer, the temperature needs to be 105ºC/220ºF.

Step 7

Skim off any of the excess foam on top of the pan, for a clean jam. You can also add in a small amount of butter right at the end and stir to help disperse the rest of the foam/scum.

Step 8

Remove from heat and leave the jam to cool for 10-15 minutes. This will allow the berries to settle so that they don't sink to the bottom in the jars.

Step 9

Meanwhile, sterilize the jars you will be using for the jam and then place it in the oven for 10 minutes at 160ºC/325ºF to completely dry.

Step 10

Place the jar onto a wooden surface (or other heat proof surface) and transfer the jam to the jars. This process is easier with a canning funnel, but not necessary.Wipe away any spillage on the outside of the jar with a damp cloth and then seal the jars. Be careful not to touch the lip or inside the lid if you're hoping to properly 'can' your jam.

Step 11

If you plan to use the blackberry jam reasonably quickly and don't intend to properly 'can' it then It will last in the fridge for up to three weeks or in the freezer for up to 6 months.

Step 12

You can also use the hot water bath method (see notes below) if you want to properly store your jam for long-term storage. That way, your jam will last up to 2 years in a cool, dry, dark location.

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