Name: Low Sugar Plum Jam
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Ingredients: 1.5 kg plums, halved and pitted; 200 g erythritol or other sugar substitute; 10 g lemon juice, freshly squeezed; 1 tsp vanilla extract; 100 ml water

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Low Sugar Plum Jam is a jewel-toned delight that balances tangy plum notes with a gentle whisper of sweetness, making it perfect for guilt-free breakfasts. This homemade spread glistens like melted rubies atop warm biscuits or crunchy toast, thanks to erythritol’s light sweetness and a splash of lemon and vanilla for depth. Whether you’re seeking a healthier fruit preserve or simply love vibrant flavors, this jam offers a delicious twist you’ll return to again and again.

Key Ingredients

Before diving into cooking, let’s gather the simple yet essential ingredients that make this Low Sugar Plum Jam shine:

1.5 kg plums, halved and pitted: The star fruit that provides natural sweetness, vibrant color, and rich plum flavor.
200 g erythritol or other sugar substitute: A low-calorie sweetener that gently sweetens the jam without adding sugar.
10 g lemon juice, freshly squeezed: Adds bright acidity to help the jam set and balance the sweetness.
1 tsp vanilla extract: Infuses a warm, aromatic depth that complements the plums’ natural tartness.
100 ml water: Helps dissolve the erythritol and creates the perfect cooking liquid for the fruit to soften.

How To Make Low Sugar Plum Jam

Crafting this jam is a straightforward process that transforms plump, ripe fruit into a thick, spreadable preserve. You’ll start by gently cooking the plums with erythritol and water, then reduce the mixture until it’s beautifully thickened. Adding lemon juice and vanilla at just the right moment brightens the flavor, while testing for the perfect set ensures your jam isn’t too runny. Finally, sterilizing jars and sealing them while hot locks in freshness and flavor for months to come.

1. Place plums, erythritol, and water in a large saucepan, ensuring the fruit is evenly coated.

2. Bring mixture to a gentle boil over medium heat, stirring occasionally to dissolve the erythritol.

3. Reduce heat to low and simmer for about 20 minutes, stirring to prevent sticking and allowing the plums to break down.

4. Add lemon juice and vanilla extract, then continue to cook for another 5 minutes until the mixture thickens and deepens in color.

5. Test for setting point by placing a small spoonful on a chilled plate; it should wrinkle slightly when pushed, indicating it’s ready.

6. Sterilize jars and lids by boiling them in water for 10 minutes, maintaining a sanitary environment for storage.

7. Ladle hot jam into jars, seal immediately, and invert for 5 minutes to create a vacuum seal that preserves freshness.

Serving Suggestions

Now that your Low Sugar Plum Jam is perfectly set, let’s explore delightful ways to enjoy it. Whether you’re planning a cozy breakfast, a fancy brunch, or a sweet snack, these serving ideas will elevate every bite. Versatile and flavorful, this jam pairs beautifully with both sweet and savory dishes to satisfy any craving.

Spread a thick layer on freshly toasted sourdough, then top with ricotta cheese and a sprinkle of chopped mint for a bright contrast.
Swirl a spoonful into plain Greek yogurt, drizzle with honey, and top with toasted almonds for a protein-packed parfait.
Dollop onto warm buttermilk biscuits or scones straight from the oven, letting the jam melt slightly into every crumb.
Use as a fruit glaze for baked pork tenderloin or chicken breasts, brushing it on during the last 10 minutes of cooking for a sweet-tart finish.

Tips For Perfect Low Sugar Plum Jam

Making jam with minimal sugar can feel like a balancing act, but with a few friendly pointers, you’ll achieve a lush, spoonable spread every time. Use plump, ripe fruit for maximum flavor and color, adjust sweetness to your preference, and mind the setting point test for the ideal consistency. Here are some extra tips to ensure success:

Adjust sweetness according to taste by adding more or less erythritol.
Use fully ripe plums for optimal flavor and color.
Store unopened jars in a cool, dark place for up to 6 months.
Once opened, keep refrigerated and use within 4 weeks.

How To Store It

Proper storage preserves the jam’s vibrant flavor and texture for as long as possible, so you can enjoy this homemade treat whenever you like. Whether you’re saving jars for gifting or stocking your pantry, follow these methods to maintain freshness and quality.

Store unopened jars in a cool, dark place—such as a pantry or cellar—for up to 6 months to prevent light and heat from degrading color and taste.
Once opened, keep the jar refrigerated and use within 4 weeks, ensuring you always dip clean utensils to avoid contamination.
For longer storage, portion jam into freezer-safe containers, leaving 1 cm headspace, and freeze for up to 6 months—thaw in the fridge overnight.
Label jars with the date made to track freshness and use older batches first for the best flavor.

Frequently Asked Questions

Here are some quick answers to your most pressing jam-making questions:

Q: What type of plums should I use for this low sugar plum jam?

A: For optimal flavor and color, use fully ripe plums. Ripe plums are sweeter and release more natural juices, which helps the jam set without needing extra sugar. If plums are slightly underripe, the jam may be tarter and require a longer cooking time.

Q: Can I substitute erythritol with another sweetener or regular sugar?

A: Yes. You can replace erythritol with another sugar substitute such as xylitol or monk fruit sweetener in a 1:1 ratio. If you prefer regular sugar, use 200 g of granulated sugar; keep in mind this will increase the sugar content and may slightly alter the texture and cooking time.

Q: How do I test if the jam has reached its setting point?

A: Place a small spoonful of hot jam on a chilled plate and return it to the refrigerator for a minute. Push it gently with your fingertip—if the surface wrinkles and the jam holds its shape, it has reached the setting point. If not, simmer for a few more minutes and test again.

Q: Why are lemon juice and vanilla extract added, and can I omit them?

A: Lemon juice adds natural acidity, which helps the jam gel and balances sweetness, while vanilla extract enhances the jam’s aroma and depth of flavor. Omitting lemon juice may prevent proper setting; skipping vanilla will yield a plainer taste but won’t affect the jam’s preservation.

Q: How long do I need to sterilize jars and lids before filling?

A: Boil jars and lids in water for 10 minutes to ensure they are completely sterilized. After boiling, keep them hot until you’re ready to fill with jam to maintain a sanitary environment and prevent spoilage.

Q: Can I use frozen plums instead of fresh ones?

A: Yes. Thaw frozen plums completely, drain any excess liquid, then proceed with the recipe. Frozen plums may release more water, so you might need to simmer the jam slightly longer to reach the correct consistency.

Q: What is the proper way to store unopened and opened jars of plum jam?

A: Store unopened, sealed jars in a cool, dark place for up to 6 months. Once opened, keep the jar refrigerated and use the jam within 4 weeks to ensure freshness and prevent mold growth.

What Makes This Special

This Low Sugar Plum Jam hits all the right notes: vibrant color, tangy-sweet flavor, and a health-conscious twist you’ll adore. By swapping out white sugar for erythritol and amplifying plum goodness with lemon and vanilla, you get a spread that’s both indulgent and guilt-free. It’s the perfect recipe to print, stash in your recipe binder, or share with friends. Give it a whirl, leave a comment with your experiences, and let’s chat if you have any questions or want to swap jam-making stories!