Wash and chop ginger into chunks.
Blend the ginger with 3 cups of water until smooth.
Transfer to a large jug or bowl and add the lime peel, cinnamon stick, and raw rice.
Cover and let sit at room temperature for 24–48 hours.
After fermenting, strain the mixture to remove pulp and solids.
Add the remaining water and sweeten to taste with sugar (add gradually and adjust as needed).
Stir in vanilla essence, Angostura bitters to taste, and rum if using
Pour into a clean bottle or jug and add the cloves.
Refrigerate until chilled. Serve over crushed ice or cold.