Bring the currant juice with sugar, bay leaves, salt, shallots and the grated zest of orange and lemon to the boil and simmer uncovered over a low heat for about 15 minutes until the juice caramelises.
Add the berries, chilli, preserving sugar and lemon juice, bring to the boil again and simmer for 4 minutes while stirring.
Pour hot into well-cleaned jars and close. Put in a cool place and let soak for a few days before use.
Makes about 1 kg of chutney. Unopened, it will keep for about 6 weeks in the refrigerator.