Put approx. 2500 - 2700 g cherry plums with stone in a large saucepan and mash them a bit with a potato masher.
Heat the cherry plums slowly over low heat while stirring until enough juice has formed.
Now bring the cherry plum mix to a boil, adding peppermint leaves, and simmer, stirring occasionally, for about 10 minutes, until the fruit is cooked through and the stones have separated from the flesh.
Pass the cherry plum mix through a sieve, weigh out 1800 g of fruit puree, and return it to the saucepan.
Mix sugar with apple pectin, add it to the fruit puree together with vanilla and stir.
Bring the fruit puree to a boil while stirring and boil it bubbling for about 3 minutes.
Immediately fill the hot wild plum jam into sterilized canning jars or screw jars to the brim, close them, put them on the lids and let them cool.