# Preparation Steps:
01 - In a bowl or jar, combine black currants and sugar. Stir well, lightly mashing the berries to release their juices.
02 - Cover and refrigerate for 24 to 48 hours, stirring occasionally, until the sugar has dissolved and the fruit juices are fully released.
03 - Strain the mixture through a fine-mesh sieve or cheesecloth into a clean bowl, pressing to extract as much liquid as possible. Discard solids.
04 - Pour the fruit syrup into a clean jar. Add the vinegar and stir to combine thoroughly.
05 - Seal and refrigerate for at least 24 hours before using, allowing all flavors to meld together.
06 - Mix 1 to 2 tablespoons shrub with still or sparkling water, or use as a cocktail mixer. Adjust concentration to taste.