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A jar of plum jam served with toast.
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5 from 1 vote

Plum jam

Homemade plum jam is a a fabulous treat for breakfast. You can make it plain, or flavour it with cinnamon, or infuse it with Earl Grey tea flavour
Course Breakfast
Cuisine American
Keyword plum jam
Prep Time 1 hour
Cook Time 20 minutes
Total Time 1 hour 20 minutes
Servings 4 jars
Calories 35kcal
Author Janice


Big pot
Mason jars
Canning kit


  • 1.25 kg ( lb) Italian plums pitted and diced
  • 450 g ( cups) granulated sugar
  • 65 mL (¼ cup) fresh lemon juice

Flavour options (choose one or the other, or neither)


  • In a medium bowl, combine the chopped plums, sugar, lemon juice and flavour (either a cinnamon stick OR the Earl Grey tea leaves wrapped in a cheesecloth to form a make-shift tea bag). Stir everything together and let rest on the counter for 6 to 8 hours, stirring every so often. The juices from the plums will form a syrup with the sugar as it dissolves.
  • At the end of the day, stir once more and then cover with plastic wrap and chill overnight.
  • The next day, transfer the macerated plum mixture to a large pot and heat on medium–high to bring it to a boil, stirring often.
  • Skim off any foam as needed and continue to boil/stir until the jam has thickened (I boiled one batch to 215ºF and the other to 217ºF). The jam is probably thick enough when it starts spitting at you.
  • Remove the cinnamon stick or the Earl Grey tea bag from the pot. Transfer the hot jam to hot, sterilized 250-mL mason jars using your handy canning tool kit available on Amazon, leaving ¼" headspace. Cover with clean, sterilized snap lids. If a jar isn't filled full, put it in the fridge to enjoy right away.
  • Process in a large boiling water batch for 5 minutes, then leave them another 5 minutes, still in the canning pot but off the heat before transferring the jars to a clean towel on the counter.
  • Let the jars rest overnight before labelling and storing them.


For the Earl Grey tea, use a good quality tea. I suggest Kusmi, for example, which you can buy on Amazon .
This recipe is adapted from the Preservation Society book on preserves, available on Amazon.
Remember that checking the temperature of your batch of jam as it cooks with a thermometer can help you determine if you have hit the jam setting point. Use a digital probe thermometer for faster readings, like the Thermoworks Dot which will register changes in temperature in 3 seconds or less!
Tried this recipe?Mention @bakesomethingawesome or tag #bakesomethingawesome!


Calories: 35kcal