Low calorie dessert. especially acute in summer.
In a small saucepan, combine 3 cups water and sugar, bring to a boil and cook over medium heat until the sugar has dissolved, about 5 minutes. Remove from fire and cool.
Place currants and 2 cups of sugar syrup in a saucepan. Cook over low heat for 12 minutes, then grind with a blender. Strain the puree through a fine sieve and cool completely.
Pour the remaining sugar syrup and liquor into the puree, stir.
Pour the mixture into a container and refrigerate for at least 3 hours. Every 30 minutes. Take the container out of the refrigerator and stir the mixture with a whisk.