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We’re on a canning spree this week. The air is crisp and the mornings are cool. We’re surrounded by a fiery array of leaves that rustle in the warm afternoon breeze. Fall is in the air and canning just feels right this time of year.
I could eat this plum jam by the spoonful; paired with a hot mug of tea (I’m totally day dreaming here)… Our tiny plum tree overproduces the most amazing little plums every year. I wish I could name this variety; anyone recognize these little beauties?
This recipe is really a cross between plum jam and plum preserves. It still has some of it’s preserve-like plum chunks, but it’s nice and thick and spreads beautifully. It’s awesome paired with breakfast pancakes or crepes. Oh and this would make the sweetest Christmas gift!
Home Canning Tools:
- 8 pint-sized jars with lids. I purchased them at Walmart.
- Large Stock Pot (20Qt+) with Rack (or purchase a canner)
- Jar lifter to safely transfer the jars
How to Make Plum Jam:
Cooking the Preserves:
1. Cut 12 lbs of plums in half, pit them and place in a large mixing bowl. Drizzle well with 4 1/2 cups sugar. Using a large spoon, stir plums with sugar until all are coated. If your plums are overripe or already very sweet, you may only need 4 cups of sugar total. You can add more sugar to taste while its cooking. Let plums sit at room temp with the sugar for about 1 hour, or until sugar is somewhat dissolved.
2. Transfer plums/sugar mixture in to a large cooking pot. Place it on the stove uncovered and bring to a boil, stirring occasionally. Make sure if you see a light boil to stir because the whole pot may not be boiling, just the center. If it stops boiling after you stir it, continue boiling until everything is uniformly bubbling, then simmer for 10 minutes and turn off the heat. Let the pot stand uncovered until it is just warm to the touch or reaches room temp.
3. As soon as it cools, repeat step 2 the same way – simmering 10 minutes. You will bring it to a simmer a total of 4 times, stirring to prevent scorching the bottom. This is why it takes 2 days to make. It’s really easy though and so worthwhile! There’s no “set” waiting time between boilings. If 2 days doesn’t work for you, by all means, take 3 days. Preserves have plenty of sugar so they won’t spoil at room temp if you leave it on the counter overnight. If you want the preserves to have an even thicker consistency, you can boil it 5-6 times if you wish.
(Note: the fourth time you boil, bring it to a boil over a little lower heat and stir a few extra times to prevent scorching. Also, it thickens more as it cools. If using a different type of plum, I suggest adding sugar to taste in case they are more tart)
4. The last time you bring it to a boil you will want to transfer it to sterilized jars while it’s boiling hot.
To sterilize the jars:
1. Start by washing your jars and lids with warm water and soap then let them dry in the oven at 215 for about 20 min or until completely dry. Boil the lids 5 min.
2. Transfer your boiling hot jam to the jars using a glass measuring cup and a funnel (least messy method) leaving about 1/2″ space.
3. Screw the lids on enough to keep a tight seal in place but don’t over-tighten them since air bubbles need to be able to escape.
Current Canning Guidelines:
Get up to date on the most recent canning guidelines here. It’s a great resource to answer frequently asked canning questions. Current guidelines recommend the following process (instead of oven canning):
- Place packed cans into the canning pot and cover with 1-2 inches of water. Bring to a boil and process 15 minutes.
- Remove from the pot and leave at room temperature undisturbed for 12-24 hours. You may hear a pop when the jars fully seal.
- After 24 hours, check that the seal has formed by pushing down on the center of the lid – it should not move at all. If the seal does not form, refrigerate jam and enjoy within 3 months.
Now don’t you want to curl up with a jar of that?
Plum Jam Recipe (No Peel, No Pectin!)

Ingredients
- 12 lbs sweet ripe plums, rinsed
- 4 1/2 cups granulated sugar
- 8 pint-sized jars with lids.
Instructions
- Place pitted and halved plums into the mixing bowl & drizzle with 4 1/2 cups of sugar. Stir plums until all coated with sugar. Let them sit for 1 hour then transfer the mixture into a large cooking pot.
- Bring it to a boil uncovered, stirring occasionally. Boil until the mixture is bubbling uniformly. Simmer for 10 minutes then turn off the heat. Cool to room temperature.
- Repeat step 2 a total of FOUR times. Last time bringing it to a boil at the lower temperature, stirring frequently to prevent scorching.
To Sterilize Your Jars:
- Start by washing your jars and lids with warm water and soap then let them dry in the oven at 215 for about 20 min or until completely dry. Boil the lids 5 min.
Filling and processing your jam:
- Transfer your boiling hot jam to the jars using a glass measuring cup and a funnel (least messy method) leaving about 1/2″ space.
- Screw the lids on enough to keep a tight seal in place but don't over-tighten them since air bubbles need to be able to escape.
- Place packed cans into the canning pot and cover with 1-2 inches of water. Bring to a boil and process 15 minutes. Remove from the pot and leave at room temperature undisturbed for 12-24 hours. You may hear a pop when the jars fully seal. After 24 hours, check that the seal has formed by pushing down on the center of the lid - it should not move at all. If the seal does not form, refrigerate jam and enjoy within 3 months.
Nutrition Per Serving
Recipe updated in 2019 to reflect new canning standards. Previously we used the oven method: screw the lids on enough to keep a tight seal in place but don’t over-tighten them since air bubbles need to be able to escape and place in the oven at 350˚F for 15 min then carefully remove from oven, flip upside down and let cool to room temperature.
Signs of Spoiled Canned Food:
With any type of canning, we follow this advice: “When in doubt, throw it out”
Discard and do not eat or taste any canned food if you notice any of the following:
- the jar is leaking, bulging, or swollen
- the jar looks damaged, cracked, or abnormal
- the jar spurts foam or liquid upon opening
- the canned food is discolored, moldy, mushy, slimy, or smells bad
Hey Natasha,
I absolutely love this recipe. I did a much more scaled down version, but it works perfectly and tastes like heaven.
My only concern was that my jam was quite thick with a completely reduced pulp by the third round of simmering. Is that normal, is it because of the smaller quantity?
Hi Oviya, it is likely due to the smaller batch since the surface area would be higher for releasing steam.
Hi,Natasha!
My jam is not getting thicker,after a couple days of boiling.What am i doung wrong????
Hi Anna, was anything altered in the recipe? It should be thick but not runny. It’s not set like store-bought jams are where you could cut through it with a spoon.
I accidentally scorched the plums while cooking them. Is there any hope for them? Can they be saved?
Hi Debra, having the pot over too high of heat and a thinner bottom pot is most susceptible to scorching. I was going to say if you haven’t stirred it already, you can salvage it (do not stir), but just pour it into a second pot. If you stir, the whole batch will have a burnt taste. I recommend finding a heavy-bottomed pot. I hope that helps!
This is the fifth season that I’ve made this jam – It is my go to recipe and it never stops being an exciting item for my kids. Thanks for this simple, flavour-preserving recipe!
That is awesome! Thank you for your great review, Brooke. We appreciate it!
About how long do you cool between boiling?
I’ve made the recipe before but never canned. I am going to make it again today and plan on canning. I have the old recipe version, with the oven canning method. Is that still ok to use? Do I have to use the water bath method?
Hi Nidia, our family canned that way for years but the standard and recommended way now is to use the canning method.
This is a fantastic recipe. I love that it has no added pectin, and it makes the most gorgeous color. i added a bit less sugar, and it’s very bright/tangy with a natural sweetness. Going to try next with pluots! (bought a case at the farmer’s market today). Thanks!
So nice to hear that you enjoyed this recipe. Yes, that sounds like a good plan, please share with us how you liked that too.
Another question! It feels like maybe buildup on the bottom of the pot. Did I definitely scorch it? Is it ruined?
Hi Leslie, if you are feeling build-up that is possible.
Can this recipe be used with yellow plums? They ate less meaty and have more juice than those you used.
Thank you,
Lidia
Hi Lidia, are those the small yellow plums? I believe I had a reader write in about using something similar and they said the plums were very juicy and needed additional boil-downs to get to a thick enough consistency.
This recipe sounds wonderful! I am going to try it. This is my first time attempting canning/making any jam/jellies! When you boil it do you add any water or just the fruit and sugar mixture?
Thanks so much!
Hi Carissa, we did not add water to the plums. I hope you love this recipe!
Why do you bring it to a boil 4 times? I think I messed up on the 3rd boil and it boiled too long as I was dealing with my toddler – oops! Other recipes I have read just have you simmer the plums for 45-60 min before canning.
Hi Jesse, a single simmer for that long may discolor your plums and they would probably be pretty thin and juicy at that point without adding pectin.
Hello! First time canning or making jam. I just finished my 4th round of boiling and cooking and the mixture is very thin still, like soup. Is this normal? What is the consistency supposed to be before canning? I do t want to waste time canning if it’s ruined some how. Thanks in advance!
Hi Leslie, to check what the texture will be like, transfer a small amount to a plate and let it cool. If it still too thin, boil it down again but stir often so it doesn’t scorch. Some plums are quite a bit juicier than others. Also, if you use a taller pat with a narrower top, there is less surface area for steam to escape so it may take an extra time.
The jam came out great! I love that I don’t have to peel or add pectin. I made blackberry jam with the same method and also came out great. Holiday gifts, check. Thank you!
You’re so welcome, Rachel. I am so glad you enjoyed and loved the jam!
Made the plum version but since I only cut plums in half they were bigger pieces than I want. My plums are huge like apple sized. I ended up pureeing for plum butter version. Came out fantastic. If your plums are big make sure you cut them up a bit.
Thank you for sharing those tips with us, Patti! I’m so glad that was helpful!
Did you use 12 pounds of blackberries?
Rachel: how many cups of blackberries did you use? Also, did you use the same amount of sugar As for the plums? I have frozen berries and would rather go pectin free if possible. Did the seeds dissolve or did you strain them out? Thank you!
Great recipe! We didn’t have enough plums, so I added seedless red grapes, cut in half. The grapes and plums all boiled down smoothly, with a great jam texture. I also think it is important to include the 12 pounds=30 cups detail in the recipe.
That’s a great idea! Thank you so much for sharing that with me!
Great recipe! We didn’t have enough plums, so we also added some seedless red grapes (each cut in half) and the jam tastes great! Yes, it would be helpful to have the conversion of 12 pounds to 30 cups within the recipe to make it easier for people to use.
Thanks for your great review! I am so glad to hear that you loved the taste of this jam.
Hello! I’m on my third boil for this recipe and the taste is rather prune-y! What could be the issue? Have I cooked it too long? It’s not set yet so I think I need a fourth boil/simmer but the flavor has changed from that bright, sweet, fresh plum taste to stewed prunes. Thanks for any advice, I’ve got more plums so I can try another batch.
Hi Sarah, I haven’t had that experience – I wonder if it’s maybe due to the type of plums used? Also, make sure it’s not getting to a rapid boil which can burn the bottom and alter the flavor.
Can we use yellow plum instead of pruns in this reciepie
Hi Sandra, I believe I had a reader write in about using something similar and they said the plums were very juicy and needed additional boil-downs to get to a thick enough consistency. If you experiment, please let me know how you like that.
Just wondering is color stays the same after canning yellow plums jam as your receipe
Hi Sandra, it depends on the type of plums used but also, the longer fruit is boiled, the more it darkens in color which is why we bring it to a boil several times rather than just one very long boiling time. Also, are you referring to the the smaller yellow plums? I believe I had a reader write in about using something similar and they said the plums were very juicy and needed additional boil-downs to get to a thick enough consistency.
Does your plum tree have sharp spikes or spines on it? If so it is a type of heirloom plum – most likely either a cherry plum or a blackthorn
Thank you for sharing that Danielle! I’ll have to take a closer look next time!
Hi! I had a tree full of plums so I decided to can them after finding this recipe. I have a question. I did the boil and simmer, and had to leave it to cool to room temperature over night. When I went to put it back on the burner this morning, there was a brown slime along the sides above the liquid level. Is that normal or is it going bad and unsafe to eat? Im worried about finishing it now.
Hi Emi, I’ve never seen that before – maybe it was just foam that turned brown in color? I can’t imagine a ‘slime’ forming overnight with the amount of sugar that is in jam.
Can I add some orange juice and reduce the sugar? Seems like it might require an extra boil due to the extra liquid. Would that work?
Hi Susie, I haven’t tested that but I think it could work. If you experiment, let me know how you liked the recipe.
I followed the recipe as written plus 1.5 cups more sugar and it turned out great! I’m ready to run with a second batch but want to add spices: cinnamon, nutmeg, and clove. At which stage can you add spices? Prior to boiling? During any of the boiling or should it be after boiling the last time? Thank you!
Awesome, thanks for your great review! Spices and herbs may be added near the end of cooking for more distinct flavor, or at the beginning for more blended flavors.
Natasha ~ my pits are impossible to remove. Can I simmer the plums whole for (5) min and then remove pits or not. Maybe it would create too much juice?
Hi Adrienne, without testing that is hard to say. If you give it a try please let m know how it works out for you.
Natasha ~ I just finished and it worked and probably saved me a good bit of time. I washed and put plums in a small amount of simmering water until the skins split. Drained most of the water and used a hand mixer on the lowest speed which loosened the meat from the pit and I then used my fingers to remove the pit. A bit of the meat sometimes clung to the pit. No big deal. I found the idea online. My plums are rather small and NOT freestone. Thank you for getting back to me.
That’s a great idea! Thank you so much for sharing that with me Adrienne!
My pleasure!
I am using the small yellow plums from my friends tree. I used a cherry pitter to remove the pits. Worked pretty good! 🙂
Oh yes, speaking from years of experience (it took me a few years to figure out that trick) you definitely saved time. So P.S. pioneers used to do a similar trick with cherries- simmer until they could skim off the pits AND THE WORMS! Seriously that’s what the old recipes say.
I used a melon baller to get my pits out. Worked well.
Thank you so much for sharing that with us!
Hello!
I am pitting the plums tonight and hope to start tomorrow. Do you have any idea how this freezes? I don’t know how to properly can things so I usually cook small batches and eat right away, but I have WAY too many plums to do that so I’m hoping to freeze some.
Hi Stephanie, I think it could work as a freezer jam. Be sure to leave 1/2″ space at the top for expansion in the freezer. If you test it out, let me know how you like it as a freezer jam
I think the plum variety is El Dorado. The color on my computer may be off, but the flesh for that variety is more orange than yellow.
I just realized my blunder. I read it as, “no peel” as in there are no peels in the recipe. Now I get it, I don’t have to peel them. No peel. I get it! Sorry about that