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Two wild plum jam recipes

Photo of a windfall of wild plums under the tree

Photo: Wild plums make delicious jam

Here are two of our wild plum jam recipes. Wild plums taste quite tart, similar to damsons. They are excellent for jam and jelly and both are not too sweet.

The following recipes describe two methods for making wild plum jam.

If your plums are barely ripe (still pretty firm) go for the first one, if they are soft and ripe go for the second. The barely ripe recipe will have a sharper taste.

Barely ripe wild plum jam recipe:

Ingredients:
900g/2lb of barely ripe wild plums
900g/2lb of preserving sugar

Method:

  1. Wash the plums and discard any damaged fruit.
  2. Slit the plums with a knife. This will allow the stones to float to the surface during cooking so that they can be easily removed.
  3. Place plums in a non metallic bowl, sprinkle over sugar and mix to coat the plums.
  4. Cover with a clean tea cloth and leave overnight.
  5. The following day put plums and sugar into a large heavy bottomed saucepan (or preserving pan) and heat very gently until the sugar has dissolved.
  6. Bring the jam to the boil and continue to boil very rapidly for about 8-10 minutes until the jam reaches setting point. At this stage carefully remove the stones as they float up to the surface, with a slotted spoon. (What is setting point? See tricks and tips below).
  7. When the jam has set, carefully pour into warm, sterilised jars, using a ladle or small jug (How to sterilise jars? See tricks and tips below)
  8. Cover the jars with tight fitting screw-top lids, or waxed disks and cellophane pot covers (waxed disks, wax facing upwards and plastic covers secured with plastic bands).
  9. when cold and store in a cool, dark place, away from damp.

Ripe wild plum jam recipe:
Ingredients:
900g/2lb of ripe wild plums
900g/2lb of white granulated sugar – if you prefer a more tart jam cut the sugar by a quarter – I prefer less sugar myself
½ pint/275ml of water
Method:

    1. Wash the plums and discard any damaged fruit.
    2. Put the plums and water into a large heavy bottomed saucepan (or preserving pan) and simmer gently until the skins split and they are soft.
    3. Meanwhile, warm the sugar in a low oven for ten minutes and add to the fruit.
    4. Stir gently over a low heat until you are sure that all the sugar crystals have dissolved.
    5. Turn up the heat to its highest setting and, stirring frequently, let the fruit boil rapidly for 8-10 minutes (this is called a rolling boil).
    6. Remove the stones with a slotted spoon during the boiling process.
    7. Test for set (What is set/ setting point? See tricks and tips below).
    8. If the jam has not set, continue to boil rapidly and test at five minute intervals.
    9. When the jam has set carefully pour into warm, sterilised jars, using a ladle or small jug. (How to sterilise jars? See tricks and tips below)
    10. Cover the jars with tight fitting screw-top lids, or waxed disks and cellophane pot covers (waxed disks, wax facing upwards and plastic covers secured with plastic bands).
    11. Label when cold and store in a cool, dark place, away from damp.

Tips and tricks:
Jam “set” or “setting point”:
Getting the right set can be tricky. I have tried using a jam thermometer but find it easier to use the following method. Before you start to make the jam, put a couple of plates in the fridge so that the warm jam can be drizzled onto a cold plate (when we make jam we often forget to return the plate to the fridge between tests, using two plates means that you have a spare cold plate). Return the plate to the fridge to cool for approx two minutes. It has set when you run your finger through it and leave a crinkly track mark. If after two minutes the cooled jam is too liquid, continue to boil the jam, testing it every few minutes until you have the right set. The jam is far more delicious if it is slightly runny.

Sterilising the jars:
We collect jars all year round for our jelly, chutney and jam making sessions. I try to soak off labels and store the clean jars and metal plastic coated screw-top lids in an accessible place. The sterilising method that we used is simple. Just before making the jam, I quickly wash and rinse the jars and place them upside down in a cold oven. Set the temperature to 160c/140c for fan assisted. When the oven has reached the right temperature I turn off the heat. The jars will stay warm for quite a while. I only use plastic lined lids for preserves as the all-metal lids can go rusty. I boil these for five minutes in water to sterilise them. If I use Le Parfait jars, I do the same with the rubber rings.
Damson Jam: The recipes above work well with damsons.


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122 Comments

  1. Hi,
    Cherry plums are dripping from the trees in Norfolk at the mo., so couldn’t resist some jam making. I attempted the barely ripe recipe with just 1 lb plums ordinary granulated sugar with mixed success : I overboiled it and it set almost solid as I couldn’t get it to wrinkle ! While I would have expected ripe fruit to have a higher liquid content, what function does the extra water perform in the “ripe” recipe ? And what would happen if I left it out ?

  2. Fiona Nevile

    Hi Caroline

    Did you use 4lbs of sugar? Making double quantities is always much harder to get a set as you need a vast suacepan for a proper rolling boil. Quite often the bubbles are the depth of the jam itself. My guess is that your jam simmered rather than boiled.

  3. Caroline wilson

    I made the jam with 4lbs of ripe plums and added 1pt of water according to your recipe above. I didn’t get a good set even after about 20 mins boiling the jam.I was afraid I would burn it, so put it into jars. Did I add too much water? Do you double the water if you double the amount of plums or stick to 1/2 pint of water whatever? I am confused!

  4. Martin Scheuregger

    That should read ‘plums’!

  5. Martin Scheuregger

    Hello!

    Thanks for this recipe, we had picked some wild plumbs and didn’t know what to do with them! Jam seemed like the perfect option, and your recipe seems to have worked very well!

    Thanks

    Martin & Kathryn

  6. I have an abundance of wild plums this year, but many seem to have little round, brown spots on the peel. Can I use them for making jam, or should I try to remove the spots?

  7. Fiona Nevile

    Hi Jan

    If you used preserving sugar it should have helped with the set. This recipe is for barely ripe plums.

    You can boil the jam up again to get a better set. Ideally you should try and get the set right first time, as reboiling can effect the flavour a bit.

  8. Hi, I followed your recipe to the latter, except that |I had 8lbs of plums that were ripe, so I used 8lbs of sugar and 1pint of water, did the set test ok too, however turned one of the jars over this morning & they all appear to be runny. should I re-boil and add pectin?

  9. Fiona Nevile

    Hi Toby

    I think that sure jel is an American product – containing pectin for setting. Nothing like gelatin.

    You need neither as the plums have loads of pectin. Just follow my recipe.

  10. Thank you so much found a wild plum tree right across from our country library. Could not beleive the abundance of such perfect spot free wild fruit. What is Sure Jel and how much is in a pkg. we have plain gelatin.. again happy jamming

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