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Easy Freezer Blueberry Lemon Jam Without Pectin

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A quick and easy freezer jam recipe combining sweet-tart blueberries with fresh lemon zest and juice, thickened naturally without pectin. Perfect for homemade preserves with a bright, fresh flavor.

Ingredients

Scale
  • 4 cups (about 600 grams) frozen or fresh wild blueberries
  • 1/4 cup (60 ml) freshly squeezed lemon juice
  • 1 tablespoon finely grated lemon zest
  • 1 1/2 cups (300 grams) granulated sugar
  • 2 tablespoons chia seeds (optional)
  • 1/4 cup (60 ml) water

Instructions

  1. If using frozen blueberries, let them thaw slightly at room temperature for about 10 minutes.
  2. In a medium saucepan, mix 1 1/2 cups sugar with 1/4 cup water. Heat gently over medium heat, stirring occasionally, until the sugar dissolves completely (about 5 minutes).
  3. Stir in the blueberries, lemon juice, and lemon zest. Bring the mixture to a gentle boil, then reduce heat to low and let it simmer.
  4. Simmer the mixture for about 10 minutes, stirring frequently. Use a potato masher or the back of a spoon to gently crush some of the berries to release juice and break down the fruit.
  5. Stir in the chia seeds (if using) and cook for an additional 2-3 minutes to help thicken the jam naturally as it cools.
  6. Remove the pan from heat and let the jam cool for 15-20 minutes until slightly thickened but still spreadable.
  7. Spoon the jam into clean, freezer-safe jars or containers, leaving about 1/2 inch headspace for expansion. Seal tightly and place in the freezer.
  8. When ready to use, thaw the jam in the fridge overnight or at room temperature for a few hours. Stir well before serving.

Notes

Use fresh lemon juice for best flavor and preservation. Chia seeds are optional but add natural thickening and texture. Ensure jars or containers are freezer-safe and leave headspace to prevent cracking. For smoother jam, pulse in a blender after cooking but before cooling. Jam thickens more as it cools. Store frozen up to 6 months; thawed jam keeps refrigerated for 2 weeks.

Nutrition

Keywords: blueberry jam, freezer jam, lemon jam, no pectin jam, homemade jam, easy jam recipe, freezer-friendly preserves, chia seed jam

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