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Homemade Plum Jam

Easy Homemade Plum Jam

Make this homemade plum jam with fresh plums. Learn to pit and make jam with simple ingredients.
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Prep Time 10 minutes
Cook Time 25 minutes
Servings: 1 Jar
Course: Breakfast
Cuisine: American
Ingredients Equipment Method

Ingredients
  

  • 2 lbs Fresh Plums Pitted
  • 3/4 cup Sugar
  • 1 Granny Smith Apple Chopped and seeded
  • 2 tsp Lemon Juice optional for flavor and brightness

Equipment

  • 1-2 Canning Jars
  • 1 Medium or Large Sauce Pan

Method
 

  1. Prepare fruit
    Wash the plums and place on a clean work surface. Use a knife to cut plums by slicing the fruit away from the pit and place the plums on a dampened clean paper towel. If you like, you can snack on the seeds while you chop off the fruit!
    Chopping plums to get fruit off pit
  2. Cook the mixture
    In a large saucepan, combine plums, chopped granny smith apple (remove seeds), and sugar mixture over medium heat. Stir gently until sugar dissolves. 
    Plums boiling with apples and sugar
  3. Simmer
    Bring to a medium-low simmer. Lots of air bubbles will appear and a foam will form—stir regularly to avoid burning and to keep the foam down. While the plum sauce simmers, you can get glass jars ready by cleaning in warm water (or use boiling water if you going to be storing the jam jars in your pantry.
    Homemeade Plum jam thickening as it boils down
  4. Check for thickness
    After ~15–30 minutes, a hot jam should start to form. Test jam on a cold plate (cold plate test). It’s ready when thick and coatable.
  5. Finish & cool
    Optionally add fresh lemon juice to taste, stir well, then turn off heat and let jam cool to room temperature.
  6. Jar & store
    Spoon into prepared jars that have been washed in hot soapy water, wipe the rims of the jars, and cover with metal lids.For long-term storage, process in a water bath canner for 10 minutes. Allow the hot jars to cool. Or simply close and store in an airtight container in the fridge for up to 4 weeks.
    Homemade Plum Jam in Jar

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