The easiest receipe for Mirebelle Jam

Persuade BH to fetch tall ladder, climb ladder and shake the tree. Remember to lay out large sheet to collect plums.  Stop errant labrador from eating them before you pick them up.
Wash and pit as many kilos of juicy mirebelle plums as you want.....................................................

Cover in 800 grams of ordinary granulated sugar for each kilo ie for 2 kilos = 1600 grams 

Give them a good mix, cover with a linen cloth and then leave them out overnight (not in a fridge)

In the morning all of the juicy fruit would have been absorbed into the sugar making it smell wonderful and leave you with a fabulous mush and mixture.  Add to a saucepan and keep on a rollicking boil for about 20-30 minutes, check to see if it is set (put a saucer in your freezer compartment) take it out when it is completely cold place your boiled fruit onto the saucer, using a spoon check to see if the mixture wrinkles up and separates, if it does it is ready to put into sterilised jars (I sterilise mine in a hot cycle in the dishwasher). Et voila!