Peel the pumpkin. Boil the berries with the pumpkin in a little water for about 10 minutes. Add the spices. Then stir in the preserving sugar and let it simmer for at least 3 minutes.
Make the gelation test and fill the jam into sterile jars.
If necessary, let the cranberries soak in a little sugar for 1 - 2 hours before processing.