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Home / Jam / Blackberry Jam (low or no sugar with Pomona pectin)

Blackberry Jam (low or no sugar with Pomona pectin)

Filed Under: Jam, Seasonal Summer Tagged With: Blackberries, Pomona Pectin

Blackberry jam in jars

Delicious blackberry jam made with Pomona pectin.

You can make this with sugar, or an alternative sweetener.

You can also make this with frozen blackberries if you have any in the freezer!

Contents hide
  • 1 The recipe
  • 2 Blackberry Jam (Pomona)
    • 2.1 Ingredients
    • 2.2 Instructions
    • 2.3 Notes
    • 2.4 Nutrition
  • 3 Reference information
  • 4 Recipe notes
  • 5 Source
  • 6 Nutrition

The recipe

Jar size choices: 125 ml  (½ cup / 4 oz) OR quarter-litre (½ US pint / 250 ml / 8 oz)

Processing method: Water bath or steam canning

Yield: 4 x quarter-litre (½ US pint) jars

Headspace: 1 cm (¼ inch)

Processing time: 10 minutes

Blackberry jam in jars
Print

Blackberry Jam (Pomona)

Yield: 4 x quarter-litre (½ US pint / 8 oz) jars.
Course Dessert
Cuisine American
Keyword Blackberries, Jam
Prep Time 15 minutes
Cook Time 20 minutes
Total Time 35 minutes
Servings 4 x quarter-litre (½ US pint / 8 oz) jars.
Calories 19kcal
Metric - US Customary

Ingredients

  • 1 kg blackberries (2 ¼ lbs / 8 cups. Measured after prep with stems removed.)
  • 4 tablespoons lemon juice (bottled)
  • 2 teaspoons calcium water
  • 2 teaspoons Pomona pectin
  • 200 g Sugar (1 cup / 8 oz. See notes for alternatives)
Metric - US Customary

Instructions

  • Wash and stem blackberries.
  • Mash the blackberries a layer at a time in something like a pie plate using something like a potato masher.
  • Press through sieve or food mill to remove seeds, if desired (see discussion in Notes below.)
  • Measure 1 litre / 4 cups of juice and put juice in large stainless steel pot.
  • If using sugar or Splenda, put them in a bowl, add the pectin powder, and mix. If using a liquid sweetener such as honey or liquid stevia, ladle out about 4 tablespoons of juice and put in a small bowl. Add the pectin powder all at once, and stir it into juice. Whichever combination you made up, set it briefly aside.
  • Add lemon juice to the pot.
  • Add the calcium water to the pot.
  • Bring the pot to a boil over high heat.
  • Add the pectin mixture a little at a time, stirring constantly.
  • Let boil vigorously for another 2 minutes, stirring constantly.
  • Remove from heat.
  • Ladle into 125 ml (4 oz) or quarter-litre (½ US pint / 8 oz) jars.
  • Leave 1 cm (¼ inch) headspace.
  • Debubble, adjust headspace.
  • Wipe jar rims.
  • Put lids on.
  • Process in a water bath or steam canner.
  • Process either size jars for 10 minutes; increase time as needed for your altitude.

Notes

Sweetener suggestions: 1 cup (200 g) sugar or 1 cup (25 g) granulated Splenda OR ½ cup up to 1 cup (125 to 250 ml) honey or 2 teaspoons liquid stevia.  For sugar, recipe says you can use ¾ cup up to 2 cups sugar. We used 1 cup.

Nutrition

Serving: 1tablespoon | Calories: 19kcal | Carbohydrates: 5g | Protein: 1g | Fat: 1g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 1g | Sodium: 3mg | Potassium: 26mg | Fiber: 1g | Sugar: 4g | Vitamin A: 33IU | Vitamin C: 4mg | Calcium: 5mg | Iron: 1mg

Blackberry jam in jars

Reference information

How to water bath process.

How to steam can.

When water-bath canning or steam canning, you must adjust the processing time for your altitude.

Information about Pomona pectin.

More information about Sugar and Salt-Free Canning in general.

Recipe notes

  • If using frozen blackberries, measure before thawing. Then thaw them either on the counter or in the microwave (zap from frozen for 4 to 5 minutes.) Don’t drain any juice off; mash that back into the berries.
  • Mash the fruit by hand for best results. Using a machine will damage the natural pectin in the fruit.
  • You don’t have to strain any seeds out at all if you don’t want to. Or, you could strain them out, then add a bit back in for “look.” Some people find some varieties of blackberries too seedy for their seed tolerance level — it will depend on your preferences and the variety of blackberry you have to work with. Obviously straining out seeds will reduce your volume yield somewhat. Straining the seed pomace a second time can yield more juice. If you strain and then end up with less than the full 1 litre / 4 cups of juice to work with, then either juice some more blackberries, or, don’t worry about it and just push on with the recipe still using the indicated amounts of other ingredients and processing time.
  • Pomona pectin comes with a small pouch of powdered calcium for you to mix with water to make calcium water.
  • The pectin powder will clump if you just mix it straight into the fruit; that’s why you mix it with something first.

Source

Pomona. Blackberry Jam. Accessed June 2020 at https://pomonapectin.com/recipes/blackberry-jam/

Nutrition

Using 1 cup / 200 g sugar as the sweetener.

Per 1 tablespoon: 19 calories

Blackberry jam nutrition. 19 cals per tbsp

Using Splenda granulated instead of sugar, per tbsp: 9 calories, 2 g carbs, 1 g protein, 1 g saturated fat, 3 mg sodium

Blackberry jam in jars

Tagged With: Blackberries, Pomona Pectin

Filed Under: Jam, Seasonal Summer Tagged With: Blackberries, Pomona Pectin

Reader Interactions

Comments

  1. Linda

    August 03, 2021 at 3:06 pm

    It says to measure 4 cups of juice but I don’t see it in the recipe.
    Is it from where you mash the berries?

    Reply
    • Healthy Canning

      September 05, 2022 at 5:54 pm

      Yes, the juice comes from mashing the berries.

      Reply
  2. Beth Krncevic

    June 06, 2020 at 9:36 pm

    5 stars
    Lovely!
    Thank you
    It’s so good to get a recipe that is not only a small batch but low sugar too

    Reply
If you need FAST or relatively immediate canning help or answers, please try one of these Master Food Preserver groups; they are more qualified than we are and have many hands to help you. Many of them even operate telephone hotlines in season.

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“If you got me started on the queer things some women do when they start canning, I’m likely to go on talking all night. The safe way to can is to get a reliable canning guide from your State College or from the Bureau of Home Economics at Washington, D. C. and follow that as though it were the laws of the Medes and Persians.”

— USDA, Radio service. Housekeeper’s Chat. 14 September 1933.
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