Watermelon Jelly is a low-sugar cooked jelly made with Pomona’s Universal Pectin. Pomona’s Pectin contains no sugar or preservatives and jells reliably with low amounts of any sweetener.
If you want to make jam, using a puree of pulp and juice, see our Watermelon Jam recipe.
Servings 5 cups
- 4 cups cups watermelon juice
- 4 teaspoons calcium water see step #1
- 1/2 cup lemon juice bottled
- 3/4 cup to 2 cups sugar
- 4 teaspoons Pomona's Universal Pectin mixed with sweetener
- 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.
- Mash watermelon and strain out the pulp and seeds.
- Measure juice and pour 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 mixture to a full boil. Gradually add pectin-sugar mixture, stirring vigorously for 1 to 2 minutes to dissolve the pectin while the jelly comes back up to a boil. Once the jelly 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.