Grapefruit Jam
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1 from 2 votes

Grapefruit Jam

With just two simple ingredients and less than an hour, you can make this simple yet delicious Grapefruit Jam that makes a wonderful gift!
Course Condiment
Cuisine American
Keyword canning, grapefruit, jam
Prep Time 5 minutes
Cook Time 45 minutes
Total Time 50 minutes
Author Sheryl



  • 9 grapefruit
  • 3.5 C granulated sugar
  • 3 tsp vanilla extract


  • Prepare your canning jars. Sterilize the jars by placing them in the dishwasher before canning or, put them in your water bath canner and bring the water bath canner to a boil for 10 minutes. Or you can also put them in a 200 degree F oven for 10 minutes. To sterilize the lids, place them in a heat-proof bowl and pour boiling water over them.
  • Remove the peel off the grapefruit. When the rind is completely separated from the fruit, separate the fruit into pieces and place in your high-powered blender.
  • Blend the fruit until it's a thick puree. Pour into a large, non-reactive pot and place on the stove top.
  • Bring the pureed grapefruit to a strong simmer and then stir in the sugar until dissolved.
  • Turn the heat on high and bring the mixture to a boil. Cook until the mixture reaches a temperature of 220 degrees F. (The mixture will boil so hard that you won't be able to stir down the boil). Keep it at that temp (220) for 1-2 minutes.
  • Immediately pour into your prepared jars. Wipe the rims of the jars, then place the sterilized lids and bands on the jars. Tighten the rings to secure. Process the jars in a water bath for 10 minutes (once the water comes to a hard boil). Make sure the jars are covered by at least one inch of water.
  • After the jars have processed in the water bath for 10 minutes, turn off the heat, and remove the jars from the water. Allow them to come to room temperature and cool. As they cool, you should hear the lids pop as they seal. The lids should seal (when you press down they should not wiggle up and down).


  • This recipe makes 3.5 pints of grapefruit jam.