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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
Hi, Natasha, I made this today with thick-skinned Italian plums, and it turned out awesome! I didn’t think it would work with these plums, but the leathery skins cooked down really tender, and the finished jam is a lovely burgundy color, not brown at all. This has so much more fruity goodness and much less sugar than jams made with pectin. Thank you so much for showing me how to do it!
I’m so happy you enjoyed it and thank you for sharing that it works with that variety of plums! 🙂
About how many cups per pound of plums?
Hi Sheila, I didn’t measure it that way but 1 lb for me was about 6-8, two-inch-wide plums. I want to say it was about 30 cups… maybe?
How do I measure 12lbs? I put them on the scale but it didn’t register and I had a full bag. Is there an easier way to measure?
What kind of scale do you have? Does it max out after a certain point like most foods scales do? If that is the case, you might weigh in portions, say 4 pounds at a time. I hope that helps!
Trying to make it to your instructions but as of the 4th cook or boil it is still thin and runny. I used ripe plums and yet it is somewhat tart.
Hi Glade! Different varieties of plums yield different results. Some plums have skins that are more tart which is amplified with cooking and some plums are juicier. I would add sugar to taste and cook it another round to get it to thicken up more.
I just made this and I will make it every year for sure, worth the time!!!
I have a plum tree just outside the house. Making so many different kinds of jam this year.
Thanks for the recipe!
I’m so happy you enjoyed it!! 🙂
😉 I wonder if I can use the same method for the mirabelles?
Hi Avi, 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.
Natasha,
Yes, those ones:) I also think you wouldn’t need as much sugar as they are sweeter. Unless you have a really sweet tooth 😉
LOVELY JAM.
Unfortunately when I took two of them out of the oven and turned they leaked. They had enough head room and I followed the instructions exactly.
What might cause this? Tomorrow I think I will make another batch and water bath them.
I wonder if it could have been due to over tightening the lids?
Fixing now will let u know how it comes out i have never tried plum jam…I had someone give me 3 bags of plums didn’t want them to go bad so I am making.jam..
I hope you love it! 🙂
oh gosh i just made this last weekend.
i was looking for a simple plum recipe. some told me i need to add pectin or it will be an ugly brown color. i was like ahhhh i cooked enough recipes from this lady if i follow instructions it should turn out good. i was patient and sure enough it turned out perfect. its my first time ever making jam and you made me feel like im a pro, from all the posititve feedback from people who have tried it. surely a recipe to go back to since i have a plum tree.oh my this was trully the best and just what i wanted
Masha, thank you for such a great review, I’m so glad you like the recipe 😁.
I love how easy this recipe is. Do you think this recipe would work as a freezer jam? I have never canned and I don’t have the jam jars I would need to can, but I just bought a ton of plums and would like to try to freeze it…
Hi Linda, I haven’t tried it that way but I do think it would work as a freezer jam. 🙂 I hope you love it!
I made this from 4 lbs of Catalina plums and used 1.5 cups of sugar. It tastes good, but next time I will peel the plums first and put the peels (where all the pectin is) into some cheese cloth and let them color and thicken the jam, but I won’t have to fish out large curls of peel from the jam. 4 lbs of plums gave me 1.5 pints of jam.
Hi Diane, did you cook the jam as many times as the recipe states? The peels should incorporate into the jam and add nice texture without being bothersome.
Hi,
Yes, I cooked it four times, for the specified time. However, I used Catalina plums. Their skin is dark, and it is not sour. It is quite a firm skin. I think that a Mariposa or Santa Rosa plum would not have done the same thing. Also, if I’d diced the plums into tiny pieces, it probably would not have been as problematic.
Hi Diane, were they very ripe?
Hi there,
The recipe says “No peels”, but it appears you do leave the peels on when you cook them? Or is there a peeling step that I missed somewhere?
Thanks!
Oh nevermind! No Peel…I get it now. Duh. So do the peels cook up softly enough to mix with the fruit or are there chunks of peel in the jam?
Thanks.
😉 They cook up softly and add great texture to the jam without being bothersome. They are nice because without them, the jam would turn to mush.
Hi Lindsey, I meant to say you don’t have to peel the plums for this recipe which can be painstaking 🙂
Can you make this using golden plums?
Carrie, golden plums would work fine as well 😁.
hi again my mom had asked me to ask you maybe your mom has apple jam recipes for my mom had seen your parents garden video & loves it. so i thought maybe i ask? please let me know soon because my mom just brought a whole bag of freshly picked apples & doesn’t know what to do with them lol…i researched american recipes but my mom only wants to try ukrainian/russian recipes. thank you =).
Hi Lily, they do have apple trees but their apple trees are young and aren’t mass producing yet. I think the once that are there will be turned into applesauce for the kids :). But thank you for the suggestion!! We might put it into practice next year 🙂
I have 8 cups of sliced plums. How do I figure the 12 lb?
Hello :). 1 lb for me was about 6-8, two-inch-wide plums. I want to say it was about 30 cups… maybe?
They are Japanese plums. We also have a tree that produces this delectable fruit!
What is the shelf life of this jam without using pectin or lemon juice? Sounds so easy!!
Hi Bonnie, we have kept it on the shelf for over a year. The fruit releases natural pectin to thicken it and the sugar preserves the jam 🙂
Thank you. To determine 12 pounds, you weigh them?
I weigh them before pitting 😀.
Hi,
When you say 12 pounds of plums, do you mean 12 pounds of whole plums with the pits in, or 12 pounds of cut and quartered plums without the pits? Also, just got tons of overripe plums from an organic market that I work at. Do you think it’s safe to can these soft plums, or should I just store the jam in the refrigerator?
Thanks!
Bub, I weigh them with the pits. Overripe plums are perfect for jam as long as they are not rotting and are safe to can.
Thank you so much!
I am currently making a batch of this plum jam. I read your note at the bottom about putting the jars in 1-2″ of boiling water, instead of putting them in the oven. If I do that, is it still necessary to invert them afterwards?
Jeni, the answer is yes. We still invert either way 😀.
hi, i`m renee 1st time canner , jelllyer. just want to tell you THANKYOU. i`ve been sooooo confused on all the do`s/dont`s . gosh if it wouldn`t be for you , I WAS DONE !!! really. ty plum recipes awesome. i`m hooked. gosh i cant express my graditude enough. truely TY
I’m so happy for your success!! Thank you so much for sharing that with me. I’m all smiles reading your comment 🙂
I made this over the weekend – and it was perfection!!!! Thank you so much for this wonderful and super easy – recipe. I had looked for one that used no pectin and this worked a dream!!!
Awesome, I’m so happy was a success for you.
Natasha, thanks so much for this recipe! I have never made jam before, and this one was so easy to follow – just finished, and it tastes amazing. It thickened really nicely, and looks and tastes professional : -)
I’m so glad you loved it!! Thanks for the great review 🙂