Mirabelle plum jam

Wash the mirabelle plums with cold water.

Boil with very little water in a pot with the lid on, until the fruit turn soft.

I used a potato masher to separate the pulp from the stones.

Take off the heat and pass through a colander. I removed the last few stones by hand (once it's cool enough to touch).

Return the pulp to a pot, add jam sugar as per packet. Usually it's 1kg of sugar to 1kg fruit. Let sugar dissolve, boil for a few minutes. To test if it's ready to set, spread a spoonful of jam onto a cold plate and see if it thickens after a few moments.

Fill the finished jam into re-used jam-jars.