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Blackberry Freezer Jam

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Blackberry Freezer Jam is a no-cook, sweet, and fruity spread that preserves the bright, juicy flavor of fresh blackberries. It’s quick to make and perfect for enjoying on toast, yogurt, pancakes, or desserts all year round.

  • Author: Julia
  • Prep Time: 15 minutes
  • Cook Time: 0 minutes
  • Total Time: 45 minutes
  • Yield: 4 cups
  • Category: Condiment
  • Method: No-Cook
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

  • 4 cups fresh blackberries, rinsed and mashed
  • 1 1/2 cups granulated sugar
  • 1 tablespoon lemon juice (optional)
  • 1 packet (1.59 oz or as per brand instructions) instant/no-cook/freezer jam pectin

Instructions

  1. Rinse the blackberries and gently mash them in a large bowl until you reach your desired consistency (some chunks, some juice).
  2. In a separate bowl, thoroughly mix the sugar and instant pectin.
  3. Add the sugar-pectin mixture to the mashed berries and stir well.
  4. Mix in the lemon juice if using, and continue stirring for 3–4 minutes until the sugar is fully dissolved.
  5. Spoon the jam into clean, freezer-safe containers, leaving about 1/2 inch of space at the top.
  6. Let the filled containers sit at room temperature for 30 minutes to set.
  7. Store the jam in the freezer for up to 1 year, or in the refrigerator for up to 3 weeks after thawing.

Notes

  • Use freezer-safe containers and leave room for expansion.
  • Frozen blackberries can be used—just thaw and drain them first.
  • Do not skip the pectin; it is essential for setting the jam without cooking.
  • Blend the berries for a smoother jam texture if preferred.
  • Follow pectin package instructions closely for the best results.

Nutrition