Wash the currants and remove them from the stems. Drain well and weigh 500 g. Select the raspberries and wash them carefully. Weigh 1000 g raspberries
Mix fruit and jam sugar well in a large pot. Bring to the boil while stirring over high heat. Then boil thoroughly for at least 3 minutes while stirring constantly. In between, possibly skim off some foam. Immediately fill up to the brim into prepared glasses and close them well