Homemade Blackberry Jam

User Reviews

5

4 reviews
Excellent
  • Prep Time

    15 mins

  • Cook Time

    25 mins

  • Additional Time

    8 hrs

  • Total Time

    8 hrs 40 mins

  • Servings

    2 pint jars

  • Calories

    1849 kcal

  • Cuisine

    British

Homemade Blackberry Jam

An easy Blackberry Jam recipe that’s perfect for beginners! This small batch blackberry jam without added pectin uses foraged wild blackberries and is simply bursts with flavour.

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Ingredients

Servings
  • 950 g wild blackberries 2 pounds
  • 850 g granulated sugar 1.8 pounds
  • 1 tbsp lemon juice
  • 1/2 tsp butter optional, or non dairy spread

Instructions

  1. Put the blackberries in a pot and add the sugar. Stir gently, cover the pot and leave the berries to macerate overnight or for up to 12 hours. The sugar will draw out the juice and soften the berries and it will dissolve quicker when you make the jam.
  2. Bring the fruit slowly to a rolling boil. Use a slotted spoon to skim the surface of any frothy scum.
  3. Continue to cook until the rolling boil reduces down, the air bubbles subside and the surface of the jam looks glossy.
  4. Test your jam using the Thermapen – the setting point is 104.5°C-105°C (220-221°F).
  5. Take the jam off the heat and allow it to sit for 10 minutes so that the fruit distributes evenly.
  6. Fill sterilised warm jars to the top with the jam while it is still over 85°C (185°F) seal and cool or simply pour the jam into an airtight container. Store the jam in the fridge and use within three weeks.

Notes

  • Essential equipment
  • (contains affiliate links)
  • Use slightly under-ripe fruit which are naturally higher in pectin. Make sure you thoroughly rinse your blackberries to get rid of dirt.
  • To get rid of the frothy scum (trapped air) either skim the jam with a slotted spoon or stir in a little butter.
  • Fill warm jars to the top with jam while it is still over 85°C (185°F).
  • Store-bought blackberries are larger and sweeter than the foraged ones. They are also lower in pectin so you will need to add some lemon juice to aid the setting.
  • Use a potato masher to break up the farmed berries slightly before cooking the jam otherwise the jam will be very chunky!
  • Large, wide pot
  • Funnel
  • Silicone spatula or wooden spoon (I used my dough whisk)
  • Jam jars or an airtight container
  • Thermapen digital thermometer 

Nutrition Information

Show Details
Calories 1849kcal (92%) Carbohydrates 471g (157%) Protein 7g (14%) Fat 2g (3%) Saturated Fat 1g (5%) Polyunsaturated Fat 1g (6%) Monounsaturated Fat 1g (5%) Sodium 9mg (0%) Potassium 778mg (17%) Fiber 25g (100%) Sugar 447g (894%) Vitamin A 1017IU (20%) Vitamin C 100mg (111%) Calcium 142mg (14%) Iron 3mg (17%)

Nutrition Facts

Serving: 2pint jars

Amount Per Serving

Calories 1849 kcal

% Daily Value*

Calories 1849kcal 92%
Carbohydrates 471g 157%
Protein 7g 14%
Fat 2g 3%
Saturated Fat 1g 5%
Polyunsaturated Fat 1g 6%
Monounsaturated Fat 1g 5%
Sodium 9mg 0%
Potassium 778mg 17%
Fiber 25g 100%
Sugar 447g 894%
Vitamin A 1017IU 20%
Vitamin C 100mg 111%
Calcium 142mg 14%
Iron 3mg 17%

* Percent Daily Values are based on a 2,000 calorie diet.

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User Reviews

Overall Rating

5

4 reviews
Excellent

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