Remove the stems from the currants, wash and weigh them.
Mix the currants with the same amount of preserving sugar 1: 1 in a saucepan. Puree half of the mixture with the hand blender. Add the juice of a quarter of a lemon and 2 teaspoons of fig vinegar.
Cook for 2-4 minutes according to the package instructions and fill to the brim in glasses that have been rinsed with hot water.