Mix the cherries and granulated sugar in a large bowl. Stir well.
Cover with plastic wrap and place in the fridge for 1-2 days, stirring every 12 hours.
Blend all liquid and cherries in a blender. Strain the liquid/syrup using a fine mesh strainer.
Add ginger syrup. (Optional see below).
Mix the syrup with vinegar and pour into jars and refrigerate.
Use shrub immediately, or wait a couple weeks until the flavors deepen, meld, and harmonize.