Carve peaches and nectarines crosswise and blanch in boiling water for about 2 minutes. Remove the fruit and rinse immediately with very cold water. Skin the fruit, cut in half and remove the stone. Roughly dice the fruit flesh and weigh 1 kg of flesh
Mix the fruit and jam sugar in a large pot and cover and allow to stand for approx. 1 hour. Bring to the boil over a high heat while stirring. Let it boil for 3-4 minutes while stirring constantly. Skim off the foam. Wash mint, shake dry, pluck leaves and chop finely. Remove the pot from the heat, carefully stir in the liqueur and mint. Immediately fill jam into prepared jars, close them tightly and leave them upside down on the lid for about 5 minutes. Then turn it over and let it cool down
Waiting time approx. 1 hour