Plum jam is a delicious way to capture the sweet-tart flavor of ripe plums, perfect for spreading on toast or adding to desserts. This less sugar plum jam recipe balances natural fruit sweetness with just enough sugar to preserve and gel, making it a healthier option without sacrificing taste or texture.
Ingredients
- 2 pounds ripe plums, pitted and chopped
- 1 cup granulated sugar (reduceable to ¾ cup for less sweetness)
- 2 tablespoons fresh lemon juice
- 1 teaspoon grated lemon zest (optional, for brightness)
- ½ teaspoon ground cinnamon (optional, for warmth)
- 1 packet (1.75 oz) no-sugar-needed fruit pectin
Instructions
- Prepare the plums: Wash the plums thoroughly. Pit and chop them into small pieces, leaving the skins on for color and pectin content.
- Cook the fruit: In a large heavy-bottomed pot, combine the chopped plums and lemon juice. Stir in the lemon zest and cinnamon if using. Bring to a gentle boil over medium heat, stirring occasionally to prevent sticking.
- Add sugar and pectin: Gradually stir in the sugar until dissolved. Sprinkle the fruit pectin evenly over the mixture and stir well to combine. Continue boiling at a steady, rolling boil for 1 minute, stirring constantly.
- Test for gel: Remove a small spoonful of jam and place it on a chilled plate. After 1-2 minutes, run your finger through it—if the jam wrinkles and holds its shape, it’s ready. If not, boil for another minute and test again.
- Jar the jam: Sterilize your jars and lids by boiling them in water for 10 minutes or running them through a hot dishwasher cycle. Carefully ladle the hot jam into the jars, leaving about ¼ inch headspace. Wipe rims clean and seal with lids.
- Process the jars: For safety and longer shelf life, process the sealed jars in a boiling water bath for 10 minutes. Remove jars and let cool completely on a towel or rack. You’ll hear the lids pop as they seal.
- Store and label: Once cooled, check the seals by pressing the center of each lid. If the lid doesn’t flex, the jar is sealed. Label the jars with the date and store in a cool, dark place.
Tips
- Sugar alternatives: You can substitute part of the granulated sugar with natural sweeteners like honey or maple syrup, but note this may affect the jam’s set and shelf life. Use commercial pectin designed for low-sugar recipes to ensure proper gelling.
- Choosing plums: Use ripe but firm plums for the best texture and flavor. European varieties (like Italian or Damson) have more pectin than Japanese plums and yield a firmer set.
- Preventing spoilage: Always use sterilized jars and lids, and process jam in a boiling water bath to prevent bacterial growth. Refrigerate after opening and consume within 3 weeks.
- Common mistake: Skipping the gel test can lead to runny jam. Be patient and test the jam’s consistency before canning.
Serving Suggestions
Enjoy your plum jam spread on warm toast or English muffins for breakfast. It pairs wonderfully with creamy cheeses like brie or goat cheese on a charcuterie board. Use it as a topping for yogurt, pancakes, or ice cream for a fruity twist. Plum jam also adds a lovely glaze to roasted meats like pork or chicken.
Variations
Try adding a splash of vanilla extract or a few crushed cardamom pods during cooking for a fragrant twist. For a spicier jam, stir in a pinch of ground ginger or a small amount of finely chopped chili pepper. You can also mix plums with other stone fruits like apricots or peaches to create a mixed fruit jam with complex flavor. For a no-pectin version, cook the jam longer to naturally reduce and thicken, but expect a softer set.
Storage and Reheating
Unopened jars of plum jam stored in a cool, dark pantry will keep for up to 12 months. Once opened, refrigerate and consume within 3 weeks for best flavor and safety. If you find the jam too thick after refrigeration, warm it gently in a saucepan over low heat, stirring until spreadable. Avoid boiling reheated jam to maintain its texture and flavor.
Frequently Asked Questions
Can I make plum jam without pectin?
Yes, but the jam will take longer to set and may be softer. Cooking the plums low and slow helps evaporate water and concentrate natural pectin. Adding lemon juice also aids gelling. Expect a more spreadable texture rather than a firm gel.
How do I reduce sugar without risking spoilage?
Using commercial pectin designed for low-sugar or no-sugar recipes helps ensure safe preservation. Always process jars in a boiling water bath to kill bacteria. Store opened jam in the refrigerator and consume within 3 weeks.
What if my jam is too runny?
If your jam hasn’t gelled after cooking, return it to the pot and boil for a few more minutes, then retest. Adding a little more pectin can help, but avoid overcooking which can darken the jam and affect flavor.
Can I freeze plum jam?
Yes, plum jam freezes well and retains flavor. Use freezer-safe containers leaving headspace for expansion. Thaw in the refrigerator and stir before use. Freezing is a good option if you want to avoid canning.
Is less sugar jam safe for canning?
Yes, if you use the appropriate low-sugar pectin and follow safe canning procedures including sterilizing jars and processing in a boiling water bath. Sugar acts as a preservative, so reducing it requires careful attention to acidity and processing times.
Can I use frozen plums to make jam?
Frozen plums can be used but should be thawed completely and drained of excess liquid before cooking. The texture may be softer, and the jam might cook faster. Adjust cooking time as needed and test for gel.
Making plum jam with less sugar is a rewarding way to enjoy seasonal fruit with less added sweetness while still achieving a safe and tasty preserve. With these tips and techniques, you can customize your jam to suit your palate and pantry.
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