How to make Blackcurrant Jam - Farmersgirl Kitchen Jul 24, 2016 · Use a ladle and jam funnel or a jug to pour the hot jam into sterilised jars. Fill right to the top so that the minimum amount of air is left between the jam and the lid. Seal the jars. While the jam is still hot, seal the jars with sterilised lids. Check that the lids are still tight once the jam has cooled. Add labels if liked. Jam Making FAQs