Mary Berry Plum Jam Recipes

DAMSON JAM

Steps:

• Wash your jars and lids in hot, soapy water, rinse, then place on a baking tray and put in a low oven for 10 mins or until completely dry. If you want to use rubber seals, remove the seals and cover in just-boiled water. Make sure you sterilise any funnels, ladles or spoons you're going to be using too.
• Put the fruit into a jam pan or a large, wide, heavy-based saucepan. Leave the stones in (see tip below). Add 150ml water and bring to the boil. Put a couple of saucers in the freezer. Lower the heat and simmer for 15 mins or until the fruit is soft.
• Tip in the sugar and stir over a very low heat until the sugar has completely dissolved, up to 10 mins. This step is vital - if you don't dissolve the sugar, the bottom of the pan may catch and burn. Raise the heat, bring to a full rolling boil, then rapidly boil for 10 minutes. Don't stir until the setting point of 105C is reached. If you don't have a thermometer, test the jam by spooning a little onto a cold saucer. Wait a few seconds, then push the jam with your fingertip. If it wrinkles, the jam is ready. If not, cook for a few mins more and test again, with another cold saucer. Once you have reached 105C or setting point, stir the jam thoroughly.
• Remove from the heat, skim off any excess scum, then stir a knob of butter into the surface (this helps to dissolve any remaining scum). Leave for about 15 mins so the fruit can settle - if you decant the jam too soon, all the fruit will sink to the bottom. Pour into sterilised jars, label and seal.

EASY PLUM JAM

Steps:

• Sterilise the jars and any other equipment before you start (see tip). Put a couple of saucers in the freezer, as you'll need these for testing whether the jam is ready later (or use a sugar thermometer). Put the plums in a preserving pan and add 200ml water. Bring to a simmer, and cook for about 10 mins until the plums are tender but not falling apart. Add the sugar, ground cinnamon and lemon juice, then let the sugar dissolve slowly, without boiling. This will take about 10 mins.
• Increase the heat and bring the jam to a full rolling boil. After about 5 mins, spoon a little jam onto a cold saucer. Wait a few seconds, then push the jam with your fingertip. If it wrinkles, the jam is ready. If not, cook for a few mins more and test again, with another cold saucer. If you have a sugar thermometer, it will read 105C when ready.
• Take the jam off the heat and add the cinnamon sticks (if using) and the knob of butter. The cinnamon will look pretty in the jars and the butter will disperse any scum. Let the jam cool for 15 mins, which will prevent the lumps of fruit sinking to the bottom of the jars. Ladle into hot jars, seal and leave to cool. Will keep for 1 year in a cool, dark place. Chill once opened.