- Wash the plums thoroughly. Break them in halves and remove stone. Put them in a pot and add sugar, cinnamon and cloves. Stir well and let it stay 5-6 hours.
- After that, put them onto strong fire and boil 4-6 minutes stirring well all the time to prevent burning.
- In the meantime, put glass jars into an oven and heat them to 100°C.
- When cooking is done put the jam into glass jars and close. Leave at least 1 cm space between cover and jam. Keep it in dark and cool place up to 8 months.