Add the cranberries and ginger to the water and heat in the pot until simmering.
Turn the heat off and let steep with the lid on for 10-15 minutes.
Strain and mix in the honey.
Let cool completely.
Add sparkling water just before serving.
Notes
If you don't want to serve this right away, store the cranberry, ginger, and honey infusion in the fridge until you're ready to mix it with the sparkling water.