Blackberry Jam

This simple, low sugar blackberry jam is easy to make, contains no added pectin and takes delicious on a piece of toast.

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Course: Breakfast, Condiment

Keyword: Blackberry, Canning, Jam

Prep Time: 5

Cook Time: 30

Total Time: 35

Servings: Cups

Calories: 98kcal

Author: S Jones

Ingredients

454 Grams Blackberries
1 ½ Cups White, granulated Sugar
2 TBSP Lemon Juice, Freshly squeezed

US Customary - Metric

Instructions

Place two small saucers or plates in the freezer. You will use these to test when the jam is set if you don't have a candy thermometer.
Prepare the blackberries by washing, and drying. You can cut them in half if you wish as well.
Place the blackberries, sugar and freshly squeezed lemon juice into a large saucepan.
Heat over medium low heat, stirring regularly.
Once the sugar has completely dissolved, mash the blackberries into smaller bits, if you wish.
You can then run the smashed berries through a mesh sieve, catching the syrup and pulp, discarding the seeds and core. Again, this is optional.
Boil for around 20 minutes, while stirring regularly until the jam reaches the gel stage. Check by dropping a little of the jam onto a chilled saucer. This jam can take up to 30 minutes to reach the gel stage. Note that during this time, the blackberry jam can heavily foam. You will need to watch it continuously and stir as the foam rises.
To help with the foaming, a small dab of butter can be added to the mixture. Though this is not necessary if you stir when it foams up.
Let the dropped jam stand for 30 seconds and then run your finger through it. If it wrinkles, the jam is ready. If it is still quite runny, cook the jam for a further 1 to 2 minutes before retesting.
When the jam is done, carefully ladle into prepared canning jars leaving ¼ inch headspace.
Store in the fridge for up to 3 months, or process in a water bath canner for 10 minutes.

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Nutrition

Nutritional information is an estimate and provided as a courtesy. The values may vary according to the ingredients and tools that are used. Please use your preferred nutritional calculator for more detailed information.