Wash and clean the gooseberries. Weigh 900 g of flesh. Mix gooseberries, syrup and jam sugar in a large pot.
Bring to the boil over a high heat while stirring. Boil for at least 4 minutes while stirring constantly.
Pour the jam immediately into clean twist-off jars. Close the jars, place them on the lid for about 5 minutes. Turn them over again and let them cool down. (can be stored for approx. 6 months).