Watermelon Jam
Watermelon Jam is a low-sugar cooked jam 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
- 4 cups watermelon puree use a seedless watermelon or see Step 3 below
- 4 teaspoons calcium water see step #1
- ½ cup lemon juice bottled
- ¾ cup up to 2 cups sugar
- 3½ 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.
- Wash jars, lids, and bands. Place jars in canner, fill canner 2/3 full with water, bring to a boil. Turn off heat, cover, and keep jars in hot canner water until ready to use. Place lids in water in a small sauce pan; cover and heat to a low boil. Turn off heat and keep lids in hot water until ready to use.
- If watermelon is seedless, puree fruit to a pulp in blender or food processor. If watermelon has seeds, remove the seeds prior to pureeing.
- Measure puree into sauce pan.
- Add calcium water and lemon juice, and mix well.
- Measure sugar into a bowl. Thoroughly mix pectin powder into sugar. Set aside.
- Bring fruit to a full boil. Add pectin-sugar mixture, stirring vigorously for 1 to 2 minutes to dissolve the pectin while the jam comes back up to a boil. Once the jam returns to a full boil, remove it from the heat.
- Fill hot jars to ¼” of top. Wipe rims clean. Screw on 2-piece lids. Put filled jars in boiling water to cover. Boil 10 minutes (add 1 minute more for every 1,000 ft. above sea level). Remove from water. Let jars cool. Check seals; lids should be sucked down. Eat within 1 year. Lasts 3 weeks once opened.
Notes
If you want to make jelly with only the juice of the watermelon, see our Watermelon Jelly recipe.