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Strawberry-Cranberry Jam

quartered strawberries in a jar of red fruit juice
Print Recipe
Strawberry-Cranberry Jam is a low-sugar or low-honey cooked recipe made with Pomona’s Universal Pectin. Pomona’s Pectin contains no sugar or preservatives and jells reliably with low amounts of any sweetener.
Servings 5 cups

Ingredients

  • 2 cups frozen cranberries chopped per directions below
  • 3 cups mashed strawberries about 6 cups whole strawberries
  • 1/8 teaspoon ground cloves
  • 2 teaspoons calcium water see step #1
  • ½ cup up to 1 cup honey or ¾ cup up to 2 cups sugar I used 1 ¼ cups sugar
  • 2 teaspoons Pomona’s Pectin mixed with sweetener

Instructions

  • Before you begin, prepare calcium water.
    To do this, combine ½ teaspoon calcium powder (in the small packet in your box of Pomona’s pectin) with ½ cup water in a small, clear jar with a lid. Shake well.
    Extra calcium water should be stored in the refrigerator for future use.
  • Prepare boiling water canner. Heat jars in simmering water until ready for use. Wash lids and bands and set aside.
  • Put rinsed, frozen cranberries in food processor or blender and finely chop. Measure 1 cup (packed down) chopped cranberry and put into saucepan.
  • Wash, remove hulls, and mash strawberries; measure 3 cups into saucepan.
  • Add cloves and calcium water to fruit in pan and stir well.
  • Measure sugar or honey into a bowl. Thoroughly mix pectin powder into sweetener. Set aside.
  • Bring ingredients in sauce pan to a full boil. Add pectin-sweetener mixture, stirring vigorously for 1 to 2 minutes to dissolve the pectin while the jam comes back up to a boil.
  • When jam returns to a full boil, remove it from the heat.
  • Remove hot jars from canner and fill jars with (marmalade/jam/jelly), leaving ¼ inch of headspace. Remove trapped air bubbles, wipe rims and put on lids and screw bands, tightening bands only to “fingertip tight” (until resistance is met, and then just the tiniest bit more).
  • Place jars in the hot water, on the rack inside the canner. (Make sure jars are upright, not touching each other or the sides of the canner, and are covered with at least 1-2 inches of water). Place the lid on the canner, bring the canner to a rolling boil, and boil for 10 minutes. (Add 1 minute additional processing time for every 1000 feet above sea level.)
  • Turn off heat and allow canner and jars to sit for 5 minutes. Then, remove jars from canner. Allow jars to cool undisturbed for 12-24 hours. Then, confirm that jars have sealed, then store properly. Eat within 1 year. Lasts 3 weeks once opened.

19 Comments

  1. If I use fresh cranberries do I cook them with a half a cup of water first and then measure two cups mashed instead the two cups frozen?

    1. You sure can! You will just need to thaw them at room temperature before mashing and measuring for your recipe.

    1. No lemon needed here, the pH of the strawberries and cranberries is sufficient. Happy jamming!

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