Plum Jam Recipe With Jam Sugar: Preserve Summer Sweetness in Jars

Preserving summer’s bounty has never been simpler than with this tried-and-true method for making plum jam at home. The addition of jam sugar ensures a perfect set without the need for pectin, making the process straightforward and reliable.

This recipe transforms fresh plums into a vibrant, glossy spread with minimal effort. The jam sugar contains the ideal balance of sugar and pectin, so you achieve a thick, luscious consistency every time. No guesswork involved.

You’ll end up with jars of deep, fruity jam that captures the essence of ripe plums. Spread it on toast, swirl it into yogurt, or gift it to friends—its versatility makes it a kitchen staple.

Store in sterilized jars for long-lasting sweetness that tastes like summer, even in the depths of winter.

Ingredients for Plum Jam Recipe with Jam Sugar

Four simple ingredients capture summer in a jar with this glossy, fruity spread.

The plums are everything here. Farmers markets are your best bet for peak ripeness (look for deep color and slight give when pressed). Jam sugar is non-negotiable—it contains the pectin needed for that perfect set. Ball or Sure-Jell brands are widely available at Walmart or any grocery store. Avoid underripe fruit; the natural sugars are key for flavor and texture.

No jam sugar? Regular sugar plus 1.5 oz powdered pectin works in a pinch. Short on plums? Pluots or damson plums add depth (adjust sugar if they’re very tart). The lemon juice isn’t just for flavor—it’s essential for balancing sweetness and aiding the set. If you only have bottled, use it, but fresh tastes brighter.

Jam keeps for 1 year unopened in a cool, dark place. Once opened, refrigerate and use within 1 month. Sterilize jars properly—this prevents mold and extends shelf life. Always use clean, dry spoons to avoid contamination.

Step-by-Step Instructions for Plum Jam With Jam Sugar

This method ensures a perfect set and vibrant flavor every time.

Step 1: Prepare the Plums

Start by washing the 2 lb Fresh Plums thoroughly under cool water to remove any residue. Pat them dry with a clean kitchen towel. I like to work with ripe but firm plums for the best texture in the final jam.

Pit the plums and chop them into even, small pieces—about ½-inch chunks work well. This size ensures they soften quickly and distribute evenly throughout the jam. You should have roughly 4 cups of chopped fruit. Place the prepared plums in a large, heavy-bottomed pot.

Step 2: Combine Ingredients and Begin Cooking

Add the 2 cups Jam Sugar, 0.25 cup Lemon Juice, and 0.5 cup Water to the pot with the plums. Stir gently to combine, ensuring the sugar begins to dissolve. The jam sugar contains added pectin, which is crucial for achieving the right consistency without extra steps.

Place the pot over medium heat and stir frequently as the mixture comes to a boil. The lemon juice adds necessary acidity to balance the sweetness and help the pectin work effectively. Watch for the sugar to fully dissolve before the mixture starts to bubble.

Step 3: Simmer to Thicken the Jam

Once the mixture reaches a full, rolling boil, reduce the heat to medium-low to maintain a gentle simmer. Stir occasionally to prevent sticking, especially as the mixture begins to thicken. You’ll notice the foam forming on the surface—this is normal and can be skimmed off with a spoon if desired.

After about 20-25 minutes, the jam will start to thicken. To test for doneness, place a small spoonful on a chilled plate and let it sit for 1 minute. If it wrinkles slightly when pushed with a finger, it’s ready. If not, continue simmering for another 5 minutes and retest.

Step 4: Jar and Seal the Jam

Remove the pot from the heat and let the jam sit for 5 minutes. This allows it to cool slightly and thicken further. Stir once more to distribute the fruit evenly. Meanwhile, sterilize your jars and lids by boiling them in water for 10 minutes.

Ladle the hot jam into the sterilized jars, leaving ¼-inch headspace at the top. Wipe the rims with a clean, damp cloth to ensure a good seal. Place the lids on the jars and screw on the bands until fingertip-tight. Process the jars in a water bath for 10 minutes to ensure they seal properly.

Let the jars cool undisturbed for 12-24 hours. You’ll hear a satisfying “pop” as each jar seals. Store the jam in a cool, dark place, where it will keep for up to 1 year. Once opened, refrigerate and use within 3 weeks.

Wine and Beer Pairings for This Recipe

Sweet Wine Pairings

A Moscato d’Asti from Italy offers the perfect match with its light effervescence and honeyed stone fruit notes. The 5.5% ABV won’t overpower the jam’s delicate sweetness. I love how the wine’s peach aromas echo the plum flavors. 🍷

Rich Dessert Wines

Try a Port wine like Graham’s Six Grapes for a bolder pairing. The caramel and dried fruit notes complement the jam beautifully. Serve slightly chilled at 55-60°F to balance the sweetness with refreshing acidity.

Beer Pairings

A Belgian lambic like Lindemans Framboise creates an unexpected but delightful combination. The raspberry notes blend harmoniously with plum, while the tartness cuts through the jam’s richness. 🍺

Sparkling Options

Prosecco works surprisingly well, especially the La Marca variety. The fine bubbles cleanse your palate between bites of jam on fresh bread. Chill to 45°F before serving for maximum refreshment.

Tea Pairings

For non-alcoholic options, a chilled hibiscus tea brings tart, floral notes that elevate the jam’s fruity depth. I brew Tazo Passion tea for 5 minutes and serve it over ice with a lemon wedge.

Frequently Asked Questions