How to Make Plum Jam - Easily!

Yield: 8 to 10 eight-ounce (half-pint) jars

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Making and canning your own Plum jam, Damson jam, Pluot, "Dinosaur Egg" plums, Gage jam or Nectarine jam  is so easy. Here's how to do it, in 12 simple steps and completely illustrated. I'll discuss plums below, but you can substitute peaches, plums or nectarines! Any variations will be spelled out in the directions inside the pectin. This stuff is awesome; if you never had plum jam, you don't know what you're missing!

For more information about stone fruits, see Peach Picking Tips

See this page for Plum jelly; or blueberry jam, this one for fig jam and for berry jams, see strawberry, blackberry, raspberry jam For easy applesauce or apple butter directions, click on these links. I've got some other pages for specific types of jam and butters, too, see this page

Ingredients

• Fruit: Plums, Gages, Damson's, Pluots or Nectarines - 4 pints of prepared fruit (which is: 8 cups, or 2 liters, about 3 lbs, almost 1.50 kg) fresh, or frozen prepared fruit.
• Lemon juice - either fresh squeezed or bottled. 1/4 cup.
• Water - 1/2 cup (optional, added in step 10 if the plums aren't very juicy, just to help keep them from sticking or burning)
• Sugar - About 4.5 cups of dry, granulated (table) sugar. It is possible to make low-sugar,  fruit juice-sweetened, or Stevia (in a prepared form like Truvia, it measures same as sugar; if you use another form, you will need do your own conversion) - or Splenda, if you prefer, -sweetened fig jam; I'll point out the differences below.
• Pectin - get the "no sugar needed" type - (it's a natural product, made from apples and available at grocery stores (season - spring through late summer) and local "big box" stores. It usually goes for about $2.00 to $2.50 per box. You will get best results with no-sugar needed pectin, whether you choose to add sugar or not! See here for more information about how to choose the type of pectin to use.

Equipment

• Jar funnel ($5 at Target, other big box stores, and often grocery stores; and available online - see this page) or order it as part of the kit with the Jar grabber .
• At least 1 large pot; I prefer 16 to 20 quart Nonstick ceramic coated pots for easy cleanup.
• Large spoons and ladles,
• 1 Water Bath Canner (a huge pot to sanitize the jars after filling (about $30 to $35 at mall kitchen stores, sometimes at big box stores and grocery stores.). Note: we sell canners and supplies here, too - at excellent prices - and it helps support this web site!
• Half pint canning jars (Grocery stores, like Publix, Kroger, Safeway carry them, as do some big box stores - about $7 per dozen 8 ounce jars including the lids and rings)
• Lids - thin, flat, round metal lids with a gum binder that seals them against the top of the jar. They may only be used once.
• Rings - metal bands that secure the lids to the jars. They may be reused many times.
• Jar grabber (to pick up the hot jars)- Big box stores and grocery stores sometimes carry them; and it is available online - see this page. It's a tremendously useful to put jars in the canner and take the hot jars out (without scalding yourself!). The kit sold below has everything you need, and at a pretty good price:
  
  See here for related tools, equipment, supplies on Amazon

  Optional stuff:

  • Foley Food Mill - not necessary; useful if you want to remove seeds (from blackberries) or make applesauce.
  • Lid lifter (has a magnet to pick the lids out of the almost-boiling water where you sanitize them. ($4 at big box stores or it comes in the kit at left)

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Plum (and/or peach, plum or nectarine) Jam-making Directions

This example shows you how to make jam from plums (and other stone fruits)! The yield from this recipe is about 8 to 10 eight-ounce jars (which is the same as 5 pints). You can make any one, or mix fruit.  Some people seem to like plum-pineapple or plum-raspberry, plum-blackberry combinations, also. Even plum-pineapple (crush the pineapple)

Step 1 - Pick the Plums! (or buy them already picked)

It's fun to go pick your own and you can obviously get better quality ones! (Damsons are shown in the photo at left)

I prefer to grow my own; which is really easy - but that does take some space and time. As mentioned in the Ingredients section; you may use frozen Plums (those without syrup or added sugar); which is especially useful if you want to make some jam in December to give away at Christmas!

 

 

 

Step 2 - How much fruit?

Jam can ONLY be made in rather small batches - about 6 to 8 cups at a time - like the directions on the pectin say, DO NOT increase the recipes or the jam won't "set" (jell, thicken). It takes about 8 cups of raw, unprepared Plums per batch. For mixed fruit jam, I use 4 cups of mushed (slightly crushed) Plums, 1 cup of raspberries and 1 cup of strawberries or blackberries. That makes a nice combo-plum jam.  Raspberries and plums seem to go very well together, blackberries add a nice flavor, too.

Step 3 - Wash the jars and lids

Now's a good time to get the jars ready, so you won't be rushed later. The dishwasher is fine for the jars; especially if it has a "sanitize" cycle, the water bath processing will sanitize them as well as the contents! If you don't have a dishwasher with a sanitize cycle, you can wash the containers in hot, soapy water and rinse, then sanitize the jars by boiling them 10 minutes, and keep the jars in hot water until they are used.

NOTE: If a canning recipe calls for 10 minutes or more of process time in the canner, then the jars do not need to be "sanitized" before filling them. But really, sanitizing them first is just good hygeine and common sense!  See this page for more detail about cleaning and sanitizing jars and lids.

Put the lids into a pan of hot, but not quite boiling water (that's what the manufacturer's recommend) for 10 minutes, and use the magnetic "lid lifter wand" to pull them out.

Leave the jars in the dishwasher on "heated dry" until you are ready to use them. Keeping them hot will prevent the jars from breaking when you fill them with the hot jam.

Lids: put the very hot (but not quite boiling; around 180 F, steaming water is fine)
water for at least several minutes; to soften up the gummed surface and clean the lids.  I just leave them in there, with the heat on very low, until I need them!

 

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Step 4 -Wash the fruit and sort!

I'm sure you can figure out how to wash the fruit in a colander of plain cold water.

Then you need to pick out and remove any bits of stems, leaves and soft or mushy fruit. It is easiest to do this in a large bowl of water and gently run your hands through the fruit as they float.  With your fingers slightly apart, you will easily feel any soft or mushy fruit get caught in your fingers.

Then just drain off the water!

 

Step 5 - Peeling the Plums

Plums and nectarines should be peeled, as their skins can be tough / chewy in jam.  If you do want to leave the skins in, you might want to run the fruit through a blender or food processor to chop them up (after you remove the pits, of course).  I prefer peeled (both for texture and pesticides are concentrated in the skins, so with store-bought plums, this helps eliminate more of the bad stuff!)  I have also simmered the whole plums is 1 inch of apple or grape juice for 10 minutes, let them cool down, then just felt for the pits with my fingers.  That is a very fast method. I run the remaining plum guts through the food processor to smooth it out.

For those you want to peel, here's a great trick that works with many fruits and vegetables with skins (like tomatoes): just dip the fruit in boiling water for 30 to 60 seconds. 

 

 

 

 

 

 

 

 

 

Remove from the water using a slotted spoon and put into a large bowl or pot of cold water and ice.

The skins will easily slide off now IF the plums are ripe! The more unripe they are, the longer you will need to heat them.

 

 

 

Step 6 - Cut up the plums

Cut out any brown spots and mushy areas. Cut the plums in half, or quarters or slices, as you prefer! Remove pits!

 

 

 

Step 7 - Prevent the fruit from darkening!

Now, to keep the fruit from turning brown, when you get a bowlful, sprinkle 1/4 cup lemon juice or Fruit-Fresh (which is just a mix of citric acid and vitamin C, perfectly natural).  Then stir the plums to make sure all the surfaces have been coated.

 

Step 8 - Measure out the sweetener

Depending upon which type of jam you're making (sugar, no-sugar, Stevia (but you will have to experiment with amount, each brand of Stevia is a different concentration), or Splenda, or a mix of sugar and Stevia (or Splenda) or fruit juice) you will need to use a different amount of sugar and type of pectin. The precise measurements are found in directions inside each and every box of pectin sold (every brand, Ball, Kerr, Mrs. Wages, etc. has directions inside).

Type of jam	Type of pectin to buy	Sweetener
regular	no-sugar or regular	7 cups of sugar
low sugar	no-sugar	4.5 cups of sugar
lower sugar	no-sugar	2 cups sugar and 2 cups Splenda (or about 1/3 that if you use Stevia, which is my preference)
no sugar	no-sugar	4 cups Splenda (or about 1/3 that if you use Stevia, which is my preference)
natural	no-sugar	3 cups fruit juice (grape, peach, apple or mixed)

Step 9 - Mix the dry pectin with about 1/4 cup of sugar or other sweetener

Keep this separate from the rest of the sugar. If you are not using sugar, you will just have to stir more vigorously to prevent the pectin from clumping.   Be sure to use a "No sugar needed" pectin rather than the regular pectin.  It works with any amount of any sweetener and ensures a better set.

Notes about pectin: I usually add about 25% - 30% more pectin (just open another pack and add a little) or else the jam is runnier than I like. With a little practice, you will find out exactly how much pectin to get the thickness you like.

For more about the types of pectin sold, see this page!

Is your jam too runny? Pectin enables you to turn out perfectly set jam every time. Made from natural apples, there are also natural no-sugar pectins that allow you to reduce the sugar you add by half or even eliminate sugar!
Get them all here at the best prices on the internet!

Step 10 - Mix the Plums with the pectin and cook to a full boil

Stir the pectin into the Plums and put the mix in a big pot on the stove over medium to high heat (stir often enough to prevent burning). It should take about 5 to 10 minutes to get it to a full boil (the kind that cannot be stirred away).

 

Step 11 - Add the remaining sugar and bring to a boil

When the berry-pectin mix has reached a full boil, add the rest of the sugar (about 4 cups of sugar per batch of Plums) or other sweetener, and then bring it back to a boil and boil hard for 1 minute.

Step 12 - Testing for "jell" (thickness)

I keep a metal tablespoon sitting in a glass of ice water, then take a half spoonful of the mix and let it cool to room temperature on the spoon. If it thickens up to the consistency I like, then I know the jam is ready. If not, I mix in a little more pectin (about 1/s to 1/2 of another package) and bring it to a boil again for 1 minute.

 

Step 13 - Fill the jars and put the lid and rings on

Fill them to within 1/4-inch of the top, wipe any spilled jam off the top, seat the lid and tighten the ring around them. Then put them into the boiling water canner!

This is where the jar tongs and lid lifter come in really handy!

Step 14 - Process the jars in the boiling water bath

Keep the jars covered with at least 2 inches of water. Keep the water boiling. In general, boil them for 5 minutes.  I say "in general" because you have to process (boil) them longer at higher altitudes than sea level, or if you use larger jars, or if you did not sanitize the jars and lids right before using them.  The directions inside every box of pectin will tell you exactly.  The directions on the pectin tend to be pretty conservative.  Clemson University says you only need to process them for 5 minutes.  I usually hedge my bets and start pulling them out after 7 minutes, and the last jars were probably in for 10.  I rarely have a jar spoil, so it must work.

Note: Some people don't even boil the jars; they just ladle it hot into hot jars, put the lids and rings on and invert them, but putting the jars in the boiling water bath REALLY helps to reduce spoilage! To me, it makes little sense to put all the working into making the jam and then not to process the jars to be sure they don't spoil!

 

Step 15 - Remove and cool the jars - Done!

Lift the jars out of the water and let them cool without touching or bumping them in a draft-free place (usually takes overnight) You can then remove the rings if you like, but if you leave them on, at least loosen them quite a bit, so they don't rust in place due to trapped moisture. Once the jars are cool, you can check that they are sealed verifying that the lid has been sucked down. Just press in the center, gently, with your finger. If it pops up and down (often making a popping sound), it is not sealed. If you put the jar in the refrigerator right away, you can still use it. Some people replace the lid and reprocess the jar, then that's a bit iffy. If you heat the contents back up, re-jar them (with a new lid) and the full time in the canner, it's usually ok.

Once cooled, they're ready to store. I find they last up to 12 months. But after about 6 to 8 months, they get darker in color and start to get runny. They still are safe to eat, but the flavor and texture aren't as good. So eat them in the first 6 months after you prepare them!

 

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Other Equipment: From left to right: Jar lifting tongs to pick up hot jars Lid lifter - to remove lids from the pot of boiling water (sterilizing ) Lids - disposable - you may only use them once Ring - holds the lids on the jar until after the jars cool - then you remove them, save them and reuse them Canning Jar funnel - to fill the jars	You can get all of the tools in a kit here: See here for related tools, equipment, supplies on Amazon

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Illustrated Canning, Freezing, Jam Instructions and Recipes

[ Easy Home Canning Directions] [FAQs - Answers to common questions and problems] [Recommended books about home canning, jam making, drying and preserving!] [Free canning publications to download and print]

Canning Books, Supplies and Accessories

These are my favorite essential canning tools, books and supplies. I've been using many of these for over 50 years of canning! The ones below on this page are just the sampling of. my preferred tools. but you can find much more detailed and extensive selections on the pages that are linked below.

• Vacuum Foodsealers for freezing, dried foods, and refrigerated foods - the FoodSaver line
• Selecting a KitchenAid mixer and attachments for home canning
• Steam Juicers
• Strainers, pit removers, seed-skin-stem removers, jelly strainers, etc. All types, makes and prices (from $19 to $350)
• Cherry pitters reviews, prices and ordering
• Food dehydrators - easy and fast to dry your own fruits, veggies, sun-dried tomatoes, etc.

The All New Ball Book Of Canning And Preserving: Over 350 of the Best Canned, Jammed, Pickled, and Preserved Recipes Paperback

This is THE book on canning! My grandmother used this book when I was a child.; It tells you in simple instructions how to can almost anything; complete with recipes for jam, jellies, pickles, sauces, canning vegetables, meats, etc.

If it can be canned, this book likely tells you how! Click on the link below for more information and / or to buy (no obligation to buy)The New Ball Blue Book of Canning and Preserving

Canning and Preserving for Dummies by Karen Ward

This is another popular canning book. Click here for more information, reviews, prices for Canning and Preserving For Dummies

Of course, you do not need to buy ANY canning book as I have about 500 canning, freezing, dehydrating and more recipes all online for free, just see Easy Home Canning Directions.

Home Canning Kits

I have several canners, and my favorite is the stainless steel one at right. It is easy to clean and seems like it will last forever. Mine is 10 years old and looks like new.

The black ones are the same type of standard canner that my grandmother used to make everything from applesauce to jams and jellies to tomato and spaghetti sauce.

This complete kit includes everything you need and lasts for years: the canner, jar rack, Jar grabber tongs, lid lifting wand, a plastic funnel, labels, bubble freer,  It's much cheaper than buying the items separately. It's only missing the bible of canning, the Ball Blue Book.

You will never need anything else except jars & lids (and the jars are reusable)! 

The complete list of canners is on these pages:

• Water bath canners - Good for acidic foods, like applesauce, pickles, salsa, jams, jellies, most fruits
• Pressure canners - needed for low and non-acidic foods, like canned vegetables (corn, green beans, etc), and meats
• Canners for glass top stoves if you have a glass or ceramic stove
• Canners for induction stovetops

 

Pressure Canners

If you plan on canning non-acidic foods and low acid foods that are not pickled - this means: meats, seafood, soups, green beans corn, most vegetables, etc., then you ABSOLUTELY must use a Pressure Canner.

Of course, you can use a pressure canner as a water bath canner as well - just don't seal it up, so it does not pressurize. This means a Pressure Canner is a 2-in-1 device. With it, you can can almost ANYTHING.

There are also other supplies, accessories, tools and more canners, of different styles, makes and prices, click here!

Basic Canning Accessories

From left to right:

1. Jar lifting tongs to pick up hot jars
2. Lid lifter - to remove lids from the pot of boiling water (sterilizing )
3. Lids- disposable - you may only use them once
4. Ring - holds the lids on the jar until after the jars cool - then you remove them, save them and reuse them
5. Canning Jar funnel - to fill the jars

FREE Illustrated Canning, Freezing, Jam Instructions and Recipes

Don't spend money on books. that you don't need to. Almost everything you can find in some book sold online or in a store is on my website here for free. Start with theEasy Home Canning Directions below. That is a master list of canning directions which are all based upon the Ball Bblue book, the National Center for Home Food Preservation and other reputable lab tested recipes. Almost every recipe I present in addition to being lab tested com. is in a step by step format with photos for each step and complete. explanations. that tell you how to do it, where to get the supplies and pretty much everything you need to know. In addition, there almost always in a PDF format so you can print them out and use them while you cook.

[ Easy Home Canning Directions]

[FAQs - Answers to common questions and problems]

[Recommended books about home canning, jam making, drying and preserving!]

[Free canning publications to download and print]