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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
Just curious…Is there a reason why this can’t be done in just one afternoon? Thanks.
Hi Suzanna, since there is no pectin, it needs time to thicken.
Once a jar is opened how long should it last if kept refrigerated?
Thinking of maybe using 250ml jars instead of pint size.
Hi Cheryl, There’s a lot of sugar to keep it preserved even after its opened. I’d say a couple of weeks in the fridge
Just wondering why you have to boil it, cool it, boil it, cool it, etc. Couldn’t you just simmer it to the desired consistency and be done with it? What’s the effect of boiling it in stages, bs all at once?
Hi Linda, if it is heated for too long, it can scorch on the bottom and can turn a very dark color.
Hello I’m about to start making this jam and I am wondering without the pectin how long will it stay shelf stable in the cupboard? Do I have to keep it in the refrigerator and how long will it last? I understand it lasts up to 3 months if the jar doesn’t seal but otherwise if everything is sealed what is the lifespan?
HI Laurie, it will keep at least a year and usually longer, just like any jam if it is processed in a water bath correctly.
Having never put up preserves before, and since i love plum jam, I decided to give this recipe a try. Well I followed it to the letter and it came out wonderful. Thank you!
Sounds great, Michael. I’m glad you gave this recipe a try!
Can you clarify the quantity this makes. Initially the recipe says 5-6 pints, and then later it says 8 jars. And you use the ambiguous term “pint.” Is that a 16 ounce American pint or a 20 ounce Imperial pint (which is still used in Canada)?
I have completed the first boiling/simmering, and it looks good so far!
Hi Terry, you are correct. It is 8 pint-sized jars. The recipe card is correct and I fixed that error higher up in the info section.
I have a tree FILLED with Italian prune plums, and have been desperately trying to find recipes to use for enjoying them throughout the year. I’ve tried a few preserves recipes, and this is BY FAR the easiest and best tasting! It is now my go-to for preserves. Just delicious — perfect flavor, not too sweet, and just the right texture to the preserves.
Love it! I’m so glad you chose this recipe to try, Cindy. Thanks for your awesome feedback!
At what temperature do you bring pot to a boil
Hi Kristie, I’ve never measured the temperature while making this plum jam. Just from a quick google search, I found this article on temperatures for jam that may be helpful to you.
Hi! I tried this plum recipe and it was delicious. I’m wondering can the same recipe be applied to grapes? I have a bunch of homegrown grapes that are about to go bad. It would be great to make a jam out of them!
Thank you for your great feedback, Iness. I haven’t tested this yet using grapes to advise. If you do an experiment, please share with us how it goes.
Hi Natasha. Love your recipes. This is the first time making the plum jam. I just filled all of the jars with jam and sealed with the lid. All of them have popped already. Do I still have to boil them for 15 minutes?
Hi Kim, per the guidelines the jars need to be processed for food safety.
I used the plums from my tree. I LOVE this recipe. It was so easy and stress free!
Thank you Natasha. This one’s a keeper👏
You’re so welcome, Carol. Thanks for your good feedback!
Those Italian plums
I am confused…why does the recipes with pectin call for 4 lbs. of plums to 8 1/2 cups of sugar. Your recipe has 3 times the fruit to half the sugar. Am I missing something?
Hi, since we boil down the mixture several times, the flavors will be concentrated, and there is no need to add that much sugar.
This is the time of year it seems everything needs to be preserved at the same time.
I like this recipe for a few reasons: 1) You can take your time; 2) it works; 3) it tastes good; 4) I’m in control of the Preserve’s consistency; 4) did I mention I’m not rushed?
Have you used this method on other fruits, i.e., strawberries, raspberries, peach, etc.?
Thanks for sharing.
I’m so happy you enjoyed this Rich! I have to agree, this recipe does not rush you and you will be in control throughout the process. Also, the method is slightly different with various fruits. We have this recipe for Peach Preserves you may like.
Hello Natasha,
You say Plum Jam (No Peel, No Pectin) but no where have you said how the peel is removed. It does seem lovely otherwise and I like the idea of simmering it in stages and eventually it thickens.
Must try, thanks very much,
Hi Yvonne, this is a no peel recipe and no need to remove the skins.
Is it normal to have a skin layer on the top when cooled?
Hi Michelle, the jam skins might accumulate at the top if the mixture hasn’t been stirred
How many cups of plums cut up equals 12lb?
Hi Barbara, 1 lb for me was about 6-8, two-inch-wide plums. I want to say it was about 30 cups… maybe?
Hi Natasha, I’m just about to make it and I saw where you wanted to know the name of your plum tree – I think it is the Mount Royal Plum – they look exactly like mine do. Can’t wait to try it. Thanks.
Thank you so much for sharing that with me Darlene!
Hi Natasha, i remember plum jam that my Hungarian mom used to make for kiflis. Do you have a freezer version of this jam?
Hi Lorraine, 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.
The little plums from your over-producing tree are called quetsch!
I live in NE France and Luxembourg, they come from this region!
We’ve just picked another 10 kilos from our tree so Im going to try out your recipe…. having just made 4 crumbles!
Oh so nice to know that! Thanks for sharing, Karen.
Hi Natasha have you ever made plum & apple jam using the same method of no pectin or gelantin?
Thank you
Hi Silvia, I have not tried that yet to advise. If you do an experiment, please share with us how it goes.
Hi
Never done this before, and will be using plums from our own tree
I noticed that there is no water or liquid added
Is this correct?
Other jams we have made years ago had water added
Thanks
Hi lee! That’s correct! I hope you enjoy this recipe!
Santa Rosa plum
I was wondering if I could add blackcaps or other berries to this recipe.
Hi Jill, I haven’t tried that yet to advise. If you do an experiment, please share with us how it goes.
The jam may be looser, as berries do not have much natural pectin compared to stone fruits.
Also in English the plum name is Damson I believe and we used to have them also! They are my favorite variety! I don’t think I even liked plums before I ate these!