Easy Mary Berry Blackberry Jam Recipe

Mary Berry Blackberry Jam Recipe
Yields: 6 Servings Difficulty: Easy Prep Time: 30 Mins Cook Time: 1 Hr 30 Mins Total Time: 2 Hr

Mary Berry Blackberry Jam is a delightful homemade preserve that captures the essence of fresh blackberries, offering a perfect balance of sweetness and tartness. It’s an excellent choice for breakfast spreads, afternoon tea, or a thoughtful homemade gift.

This recipe yields about 4-5 jars of jam and can be prepared in approximately 2 hours.

What is Mary Berry, Blackberry Jam?

Mary Berry Blackberry Jam is a classic British preserve made from ripe blackberries, granulated sugar, and a hint of fresh lemon juice. This combination creates a perfectly balanced, sweet-tart spread that is ideal for enhancing your favorite breads, desserts, and more.

Blackberry Jam Recipe Mary Berry

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Why You’ll Love This Recipe

  • Bursting with Flavor: Fresh blackberries provide an intense, fruity taste.
  • Simple Ingredients: Only a few ingredients are needed.
  • Homemade Goodness: Nothing beats the taste of homemade jam.
  • Versatile Use: Perfect for toast, scones, and desserts.
  • Long Shelf Life: Properly sealed jars can last for months.

Ingredients Needed to Make Mary Berry Blackberry Jam

  • 1.5 kg (3.3 lbs) of fresh blackberries: Ensure they are ripe and juicy.
  • 1.5 kg (3.3 lbs) of granulated sugar: Helps preserve the fruit and adds sweetness.
  • Juice of 2 lemons: Adds acidity to balance the sweetness and helps in setting the jam.


  • Large preserving pan
  • Sterilized jam jars with lids
  • Wooden spoon
  • Ladle
  • Jam thermometer (optional)
  • Funnel (optional)

Instructions to Make Mary Berry Blackberry Jam

Step 1: Prepare the Blackberries

  • Wash the blackberries thoroughly and remove any stems or leaves. Place them in a large preserving pan.

Step 2: Add the Sugar and Lemon Juice

  • Pour the granulated sugar over the blackberries and add the lemon juice. Mix well to combine.

Step 3:  Heat the Mixture

  • Place the pan over low heat, stirring occasionally until the sugar dissolves completely.

Step 4: Bring to a Boil

  • Increase the heat to high and bring the mixture to a rapid boil. Boil for about 15-20 minutes, stirring frequently to prevent sticking.

Step 5: Test for Setting Point

  • To test if the jam has reached its setting point, place a small amount on a chilled plate. If it wrinkles when pushed with your finger, it’s ready.

Step 6: Skim Off Foam

  • Remove the pan from the heat and skim off any foam from the surface.

Step 7: Fill the Jars

  • Carefully ladle the hot jam into sterilized jars, leaving a small gap at the top. Seal immediately with lids.

Step 8: Cool and Store

  • Allow the jars to cool completely. Store in a cool, dark place.

Easy Mary Berry Blackberry Jam Recipe

What Do I Serve With Mary Berry Blackberry Jam?

  • Spread on Toast: A classic way to enjoy the rich flavor.
  • With Scones and Clotted Cream: Perfect for afternoon tea.
  • In Yogurt or Porridge: Add a fruity twist.
  • As a Cake Filling: Enhances desserts with its sweet-tart taste.
  • On Pancakes or Waffles: A delightful breakfast treat.

Pro Tips to Make Perfect Mary Berry Blackberry Jam

  • Use Ripe Blackberries: For the best flavor and sweetness.
  • Sterilize Jars Properly: Ensures the jam stays fresh.
  • Monitor the Boiling: Prevents the jam from burning.
  • Use a Jam Thermometer: To check the setting point accurately.
  • Let It Sit: Allow the jam to cool slightly before filling jars.

Variations of Mary Berry Blackberry Jam

  • Mixed Berry Jam: Combine blackberries with raspberries or blueberries.
  • Spiced Blackberry Jam: Add a pinch of cinnamon or nutmeg.
  • Lemon-Blackberry Jam: Increase the amount of lemon juice for a tangier taste.
  • Vanilla Blackberry Jam: Add a vanilla pod during cooking.
  • Low-Sugar Version: Use less sugar or a sugar substitute.

How do I Store Mary Berry Blackberry Jam Leftovers?

  • In the Fridge: Keeps for up to 3 weeks.
  • In the Freezer: Can be frozen for up to 6 months.
  • In a Cool Pantry: Store sealed jars for up to a year.
  • Avoid Direct Sunlight: Prolongs shelf life.
  • Use Clean Utensils: To prevent contamination.

How do I Reheat Mary Berry Blackberry Jam Leftovers?

  • Microwave Briefly: Heat for a few seconds until spreadable.
  • Stovetop Heating: Warm gently over low heat.
  • Avoid Overheating: Prevents altering the texture.
  • Stir Well: Ensures even consistency.
  • Serve Immediately: Best enjoyed fresh.

Nutrition Value (per serving):

  • Calories: 50
  • Total Fat: 0g
  • Saturated Fat: 0g
  • Cholesterol: 0mg
  • Sodium: 0mg
  • Total Carbohydrates: 13g
  • Dietary Fiber: 1g
  • Sugars: 12g
  • Protein: 0g


How long does homemade blackberry jam last?

Homemade blackberry jam, when stored in sterilized jars and kept in a cool, dark place, can last for up to one year. Once opened, it should be refrigerated and consumed within 3 weeks.

Can I use frozen blackberries to make jam?

Yes, you can use frozen blackberries to make jam. Thaw the blackberries completely and drain any excess liquid before using them in the recipe to ensure the correct consistency.

How do I know when my blackberry jam is ready?

To check if your blackberry jam is ready, use the wrinkle test. Place a small amount of jam on a chilled plate and let it cool for a minute. If it wrinkles when you push it with your finger, it has reached the setting point.

What can I do if my jam is too runny?

If your jam is too runny, you can return it to the heat and boil it for a few more minutes, checking frequently for the setting point. Adding a bit more lemon juice can also help it set better.

Final Words

Making Mary Berry Blackberry Jam at home is a rewarding experience that fills your kitchen with the delightful aroma of fresh blackberries. This simple yet delicious recipe allows you to create a jam that’s perfect for any occasion. Enjoy the process and savor the homemade goodness!

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