Wash, stalk and stone the cherries. Weigh 1 kg of flesh. Mix well with jam sugar in a large pot and leave to stand for about 3 hours
Roast the almonds in a pan without fat until golden brown. Sprinkle sugar on top and caramelize. Remove the almonds immediately and let them cool down
Bring the cherries to the boil while stirring, then boil them for exactly 4 minutes
Stir in almonds and grappa and immediately fill the jam into prepared glasses. Seal and allow to cool