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Sugar-Free Blackberry Jam


  • Total Time: 35 minutes
  • Yield: Approx. 3-4 half-pint jars

Description

Enjoy the vibrant taste of summer with this easy-to-make sugar-free blackberry jam. Perfect for those seeking a delicious, guilt-free spread without added sugars.


Ingredients

  • 4 cups fresh or frozen blackberries
  • 1/2 cup water
  • 2 tablespoons fresh lemon juice
  • 1/4 cup low-sugar or no-sugar pectin
  • 1/2 cup granular erythritol or erythritol-stevia blend (or to taste)

Instructions

  • 1. Prepare Blackberries: Wash fresh blackberries. If using frozen, do not thaw. Place berries in a large, heavy-bottomed pot. Lightly mash about half of the berries.
  • 2. Simmer Berries: Add water and lemon juice to the pot. Bring to a gentle simmer over medium heat, stirring occasionally, for 5-7 minutes until berries soften and release juices.
  • 3. Add Pectin: In a small bowl, whisk pectin with 2 tablespoons of the sweetener. Stir this mixture into the simmering berries.
  • 4. Boil and Set: Increase heat to medium-high and bring to a full, rolling boil that cannot be stirred down. Boil vigorously for exactly 1 minute, stirring constantly.
  • 5. Test and Sweeten: Remove from heat. Perform a plate test for set (place a spoonful on a chilled plate, push after 1-2 mins; if it wrinkles, it’s set). Stir in remaining sweetener, adjusting to taste.
  • 6. Jar Jam: Ladle hot jam into clean, sterilized jars, leaving 1/4 inch headspace. Wipe rims, apply lids and bands. Cool on counter for refrigerator storage, or process in a boiling water canner for 10 minutes for shelf-stable jam.
  • Prep Time: 15 mins
  • Cook Time: 20 mins