A unique blend of fruit and nut flavors sets this plum jam canning recipe apart from traditional jams, making it a perfect alternative to store bought chocolate spreads and sugary jam. Meant for a morning toast, this luscious homemade spread can be used on a variety of pastries, as a topping for desserts, or even as a unique filling for pastries.
Prep Time15 minutesmins
Cook Time50 minutesmins
Resting time2 hourshrs
Course: Jam
Keyword: homemade plum jam, how to cook plum jam, how to make plum jam, plum jam canning recipe, plum jam recipe, plum jam without pectin, Santa Rosa plum jam, small batch plum preserve
Equipment
large pot with a heavy bottom
potholders, oven mitts, trivets for hot dishes
wooden spoon or silicone spatula
Ingredients
7lbs.red or black plums (3.2 kg)
2.5cupsugar
½cupcacao powder
1cupwalnuts
Instructions
Preparing Ingredients for Plum Jam:
Start by thoroughly washing the plums and removing any stems, keeping the skin on but discarding any bruised areas.
Remove the pits from the plums and slice them into larger pieces.
Wash the walnuts, transfer them into an appropriate pan, and set aside
How to Cook Plum Jam:
In a wide, heavy-bottomed pot, combine the sliced plums with sugar.
Allow the plums to macerate for 2 hours or overnight to dissolve the sugar and let the plums release their juices.
Place the pot over medium heat, bringing the plums to a boil. Reduce the heat to medium-low and simmer your plum jam for 30 minutes.
Simultaneously, as your jam cooks, start with the walnuts. Pour hot water over the walnuts and place the pan over medium heat. Lower the heat once the water boils and simmer the walnuts for 20 minutes.
Drain the walnuts and add them to the plum jam mixture along with the measured cocoa powder. Stir everything together and continue cooking your plum jam for an additional 20 minutes, for a total cooking time of 50 minutes.
Stir your jam regularly to prevent it from sticking to the bottom.
Ensure the jam is boiling as you proceed to the next step, and have your Mason jars ready for immediate canning of your delicious plum jam preserve.
Notes
The specified in this jam recipe quantity of ingredients should yield enough jam to fill four 8 oz. (250 ml.) mason jars. The final yield may vary based on your preferred level of doneness.