Plum Jam without Pectin (Low Sugar)

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Did you know you can make jam within 30 minutes even on a busy weekday? Jam making doesn’t have to be difficult and with this recipe, you will see how simple it actually is to use up a bunch of plums (or apples, elderberries, etc.) and make a delicious plum jam for your family to enjoy all winter long.

Why You Will Love This Recipe

– Fast and easy way to preserve fresh plums for winter.

– No pectin is needed, so you can make this jam with simple pantry ingredients.

– Water bath canning is easy and is done within 20 minutes.

Ingredients

Plums – use ripe plums for best results but make sure to cut out any parts that are starting to brown and go bad.

Sugar – this recipe uses less sugar than an average jam would call for. Feel free to increase the amount according to your liking! However, I found that making jam with this much sugar doesn’t cause problems in the long run especially since I am processing the cans in a water bath.

Water – if you would like a thicker jam just omit the water. Otherwise, tap water works since you will boil it anyways!

Lemon juice – lemon has natural pectin which allows for the jam to set better without adding any extra pectin to the pot!

Cinnamon – feel free to experiment with other Fall spices you think would go well with your jam.

Tools You Might Need

– A jam funnel, helps to avoid extra mess!

– A large thick-bottomed pot (a dutch oven is my favorite choice!);

– An immersion blender. I really like to blend my jam to avoid peeling the fruit!

– A can lifter. You will burn your hands if you try to get the cans out of the water without a can lifter (ask me how I know that!)

Step-by-step recipe

Step 1 – Prepare the jars

You don’t need to sterilize your jars if you are processing them in a water bath or in a pressure canner. Just make sure you wash the jars in warm soapy water.

Step 2 – Cook the fruit

Wash and pit the plums and place them into a thick-bottomed pot (a dutch oven is a safe choice). Add the sugar, water, and lemon juice and bring to a simmer. Let the plums simmer for about 20 mines breaking up the pulp with a potato masher as the fruit softens.

Step 3 – blend and jar

Puree the fruit by using an immersion blender and jar right away. Make sure your jars are not cold (warm is fine) and fill them up leaving a little bit of head space (about ¼ of an inch, ½ of a cm). Place the lids onto the jars (you don’t have to screw them on super hard).

Step 4 – water bath

Prepare a large pot that can fit the jars. Fill the pot with water (hot or cold) and bring it to a boil. Turn off the heat and place the jars into the water. The water should reach above the jar lids. Turn the heat back on and bring the water to a boil again. Leave the jars in for 15-20 minutes, then turn off the heat, take off the lid and let the jars sit for a few minutes before taking them out. Let the jars cool completely before placing them in the pantry.

Expert Tips

– Use a jam funnel to avoid extra mess.

– Before placing the lid onto the jar wipe the top of the rim with a clean kitchen towel and then run your finger around the rim once again to make sure no food remains left on it. Cleaning the rim will ensure a good seal!

– Don’t do anything with the jars while they are cooling down. Let them sit on your kitchen counter until they are fully cooled. As the jars are sitting they are still sealing and you want to make sure you don’t intervene in that process!

– Experiment with other fruit pairings. I have made plum jam with apples before and it tastes great! Plus slightly unripe apples add natural pectin to the pot which assists in the setting of the jam. Try other pairings and let me know how you liked them in the comments below!

FAQ

Do You Skin the Plums Before Making Jam?

If you are going to blend the jam then no, you don’t need to peel the plums. However, if you like the chunky jam then you should peel your fruit as the skins will take away from the texture! For detailed instructions on how to peel plums check out this article.

Do I Need to Sterilize the Jars?

There is no need to sterilize the jars apart from washing them in warm soapy water because you will be processing them in a water bath. If you are not doing either the water bath or pressure canning step then you do need to sterilize jars. However, it is safer for you and your family to process the cans as it will prevent deadly bacteria from growing. It is rare that this type of bacteria happens to grow in a jar but if it does then it can be deadly. So, if you don’t want to take chances you are better off at least doing a water bath, and in that case you don’t need to sterilize the jars.

How Can I Thicken My Jam without Pectin?

Plums and lemon juice have natural pectin which allows for a better setting of the jam. However, if you find your jam too thin then add some cornstarch to thicken it during the boiling process.

How Long Will this Jam Keep?

If properly canned, this jam will be good for years. However, if you don’t can it and rather keep it in the refrigerator then it should be good for at least 3-4 weeks.

Can I Eat Jam If There Is Mold On the Top?

I would not recommend eating a moldy jam because you simply don’t know how far it has reached into the can. Having said that, there are other opinions out there suggesting you can just scoop off the mold along with some jam and eat the rest but I definitely would be careful about that!

Enjoyed this easy low sugar no pectin plum recipe? Please leave a 5-star rating on the recipe card below! If you REALLY liked this recipe for preserving ripe plums for winter consider supporting it by buying me a coffee! 🙂 Thank you and have a great day!