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How to Make Homemade Watermelon Jam

How to make DIY homemade watermelon jam with pectin - This simple and easy recipe uses sugar and pectin to cook the best watermelon jam you've ever eaten!
4.67 from 6 votes
Prep Time 20 mins
Cook Time 20 mins
Total Time 40 mins
Course Condiment
Servings 80 servings
Calories 47 kcal


  • 8 cups watermelon black seeds removed, separated from rinds, and cut into chunks
  • ¼ cup lemon juice
  • 2 box No Sugar Needed Pectin if you only add 1 box of pectin, you will end up with something akin to watermelon syrup
  • 4 cups sugar


  • Puree the watermelon chunks in a blender or food processor. Depending on the size of your blender, you may have to work in two batches, but the finished amount of puree should be roughly 4 cups. There is no need to strain the watermelon juice because the puree gets very thin.
  • Pour the watermelon puree into a large pot. Add lemon juice.
  • In a small metal bowl, whisk both boxes of pectin together with ½ cup of the sugar. This will prevent the pectin from clumping later on.
  • Whisk the pectin/sugar mixture into the watermelon puree.
  • Bring the mixture to a boil over medium-high heat. Stir almost constantly to prevent the bottom of the mixture from burning.
  • Add the rest of the sugar when the mixture is boiling so hard that you can’t stir the bubbles away. Whisk the sugar in.
  • Return the mixture to a hard boil, and cook for one minute.
  • After one minute, remove the jam from heat.


You have three choices:
  1. Can the jam. This is my favorite option. It’s simple, as long as you have the right tools. More on that below.
  2. Freeze the jam up to one year. Use containers especially for keeping in the freezer, and wait to fill them until the jam mixture has cooled.
  3. Eat the jam. This is a good option, except that this particular recipe makes about 10 cups of jam. It will only keep a few weeks in the refrigerator, so… unless you’re going to give it all away really quickly, this isn’t a great option.


Serving: 2tablespoons | Calories: 47kcal | Carbohydrates: 12g | Protein: 1g | Fat: 1g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Sodium: 3mg | Potassium: 18mg | Fiber: 1g | Sugar: 11g | Vitamin A: 87IU | Vitamin C: 2mg | Calcium: 1mg | Iron: 1mg
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