Carefully wash the currants thoroughly and drain well on a sieve. Pluck the berries from the panicles. Put 900 g currants, jam sugar and liqueur into a large pot and mix well. Leave to stand for about 30 minutes. Then bring to the boil over a high heat while stirring constantly and boil for about 3 minutes until bubbly. Immediately fill up to the brim into glasses, close them well. Place on the lid for 5-10 minutes. (Results in approx. 1150 ml)
Waiting time approx. 30 minutes