Small Batch Blackberry Jam

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Simple three ingredient blackberry jam. This easy small batch recipe makes just 2 jars.

4.86 from 41 votes

Very quick, easy and delicious blackberry jam with just three ingredients. Small batch recipe which makes two jars. Ideal for the beginner jam maker or preserver.

Servings: portions

Author: Helen Best-Shaw

Prep Time10

Cook Time20

Total Time30

Ingredients

450 g blackberries
450 g sugar
2 tbsp lemon juice

Instructions

Prepare the fruit - Wash the blackberries discarding any which are damaged or over ripe and place in a saucepan.
Add the sugar and lemon juice and stir.
Leave for an hour to allow the sugar to draw the juice from the fruit.
450 g blackberries, 450 g sugar, 2 tbsp lemon juice
Cook the jam - Once the sugar has drawn out the blackberry juice cook on low heat, stirring frequently to dissolve the sugar. Heat slowly at first, bringing the jam mixture to a simmer and stirring to ensure that no fruit sticks to the base of the pan and burns.
Put clean jam jars into the oven to sterilize.
Heat to setting point - Cook the jam at a rolling boil until it reaches setting point. Stir frequently, running a spoon or spatula over the bottom of the pan so that none of the fruit sticks and burns.
Test for setting point once a thermometer reaches 105C with either the flake or wrinkle test. DO NOT rely just on temperature.
Pot the jam - Let the jam sit in the jug for a few minutes to cool and thicken before potting.
Use a glass jug and a jam funnel for ease and less mess. I like to keep the jars on a roasting tray just in case one shatters.
Screw the lids down lightly and allow to cool.

Notes

Wild blackberries have more pectin than farmed. If your berries are especially tart - but still ripe - you can use less lemon juice.
450g of blackberries will fill 2 x 250ml jars or will make just over 2 cups of jam.
450g of wild blackberries is approximately a litre or a generous 4 cups.

• Please note that the nutrition information provided below is approximate and meant as a guideline only.

• Unless stated otherwise cup conversions have been made with an online tool. For accuracy please check with your favoured conversion tool. We recommend buying inexpensive digital kitchen scales.