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    The Butter Half / Recipe Index / Sauces and Dressings / Blackberry Jam Recipe

    Blackberry Jam Recipe

    By Madi • Published: Feb 13, 2023 • Modified: Feb 13, 2023 • Leave a Comment • This post may contain affiliate links.

    JUMP TO RECIPE PRINT
    homemade blackberry jam in a glass jar with a light colored background

    Whenever I make homemade jam, I think of the Friends episode, “The One with The Jam” and Joey eating all of Monica’s homemade jam by the spoonful. I promise this homemade blackberry jam recipe is good enough to eat alone, with a spoon, Joey style!

    Blackberry jam is delicious, simple to make, and contains no added pectin. Blackberries are full of flavor and naturally high in pectin so they form that yummy jam texture easily, with no added pectin or preservatives. All you need for this recipe are 3 ingredients and 25 minutes. Let’s get to it.

    Recipe Ingredients

    5 cups (24 oz) blackberries 

    2 cups granulated sugar

    1 ½ tablespoon lemon juice

    Step By Step Instructions

    Step 1: Add the blackberries, granulated sugar, and lemon juice into a medium-sized saucepan (make sure to leave a few inches at the top to ward off splattering). 

    blackberries, granulated sugar, and lemon juice in a medium-sized saucepan

    Step 2: Turn the heat to medium-high and mix the fruit and sugar together until the sugar dissolves and releases juice. 

    blackberries, granulated sugar, and lemon juice in a medium-sized saucepan giving off juices

    blackberries, granulated sugar, and lemon juice in a medium-sized saucepan giving off juices

    Step 3: Continue to simmer for about 20 minutes, stirring occasionally, until much of the liquid has thickened and evaporated and the liquid in the pot has reached 220 degrees Fahrenheit. 

    blackberry jam ingredients simmering in a pot thickening into a jam

    Step 4: Transfer the jam to a glass jar, seal it with a lid, and place it in the fridge for at least 2 hours until the jam cools. Enjoy!

    homemade blackberry jam in a glass jar with a light colored background

    Recipe FAQs

    How do I thicken blackberry jam?

    • Blackberry jam thickens better than other fruit jams because of the natural pectin it contains. Adding sugar also helps to thicken your homemade jam. Typically store-bought jams contain added pectin, which helps to thicken them and prolong their shelf life. 

    How long will blackberry jam last?

    • Because this blackberry jam recipe does not contain added preservatives it needs to be stored in the fridge or freezer in an air-tight container. If you store your jam in the fridge it will stay good for 3 - 4 weeks. You can also freeze blackberry jam for up to 6 months. 

    What jars should I use? 

    • Any sterilized, glass jars will work to store our jam. 

    Can I use frozen blackberries?

    • If you don’t have fresh blackberries you can definitely use frozen blackberries for blackberry jam. If you use frozen blackberries you do not need to thaw them first. 

    Expert Tips

    Another good way to test if your jam is done is with the plate test. When you begin making the jam, stick a plate in the freezer. To test if your jam is done, remove the plate from the freezer and scoop a thin spot of jam on the plate. Allow the jam to cool for 30-45 seconds. Then use your finger to push the jam. If the jam wrinkles, it is done. If the jam stays liquid, continue to cook it for another 5 or so minutes, then repeat. 

    Storage Instructions

    Store your jam in an airtight container in the fridge for 3 - 4 weeks or freeze it for up to 6 months.

    Like this jam recipe? Try these ones, too!

    Easy Homemade Fig Jam

    Easy Homemade Strawberry Jam

     

    homemade blackberry jam in a glass jar with a light colored background

    Blackberry Jam Recipe

    By: Abbey Rodriguez
    PRINT PIN RECIPE
    Blackberry jam is delicious, simple to make, and contains no added pectin. Blackberries are full of flavor and naturally high in pectin so they form that yummy jam texture easily, with no added pectin or preservatives. All you need for this recipe are 3 ingredients and 25 minutes.
    Prep Time 5 minutes
    Cook Time 20 minutes
    Servings: 2.5 cups
    Calories: 742kcal

    Ingredients

    • 5 cups blackberries (24 oz)
    • 2 cups granulated sugar
    • 1 ½ tablespoon lemon juice

    Instructions

    • Add the blackberries, granulated sugar, and lemon juice into a medium-sized saucepan (make sure to leave a few inches at the top to ward off splattering).
    • Turn the heat to medium-high and mix the fruit and sugar together until the sugar dissolves and releases juice.
    • Continue to simmer for about 20 minutes, stirring occasionally, until much of the liquid has thickened and evaporated and the liquid in the pot has reached 220 degrees Fahrenheit.
    • Transfer the jam to a glass jar, seal with a lid, and place in the fridge for at least 2 hours until the jam cools. Enjoy!

    Notes

    • Another good way to test if your jam is done is with the plate test. When you begin making the jam, stick a plate in the freezer. To test if your jam is done, remove the plate from the freezer and scoop a thin spot of jam on the plate. Allow the jam to cool for 30-45 seconds. Then use your finger to push the jam. If the jam wrinkles, it is done. If the jam stays liquid, continue to cook it for another 5 or so minutes, then repeat.

    Nutrition

    Calories: 742kcal | Carbohydrates: 188g | Protein: 4g | Fat: 2g | Saturated Fat: 0.04g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 0.1g | Sodium: 5mg | Potassium: 479mg | Fiber: 15g | Sugar: 174g | Vitamin A: 617IU | Vitamin C: 64mg | Calcium: 86mg | Iron: 2mg

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    Hi, I'm Abbey! Certified Holistic Nutritionist & Herbalist | I healed my body using holistic nutrition and herbs. And I believe you can, too. Here you will find nourishing recipes and wellness tips for the family, as well as my herbal cookbook, Root & Nourish. Because you can achieve your ultimate wellness goals using plants and whole foods.

    More about me →

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