Prepare the Ginger: Grate fresh ginger and set aside. If you prefer a more subtle ginger flavor, you can steep the grated ginger in the pomegranate juice for about 5 minutes and then strain it out.
Mix the Base: In a cocktail shaker or large glass, combine the pomegranate juice, freshly squeezed orange juice, and agave syrup (if using). Stir or shake well until the agave syrup is fully dissolved.
Add the Kombucha: Slowly pour in the 221 B.C. Blueberry Ginger Kombucha to the juice mixture. Stir gently to combine.
Prepare the Glass: Fill a serving glass with ice cubes. Strain the mocktail mixture over the ice.
Garnish: Add a few blueberries, a slice of orange, and a small piece of grated ginger on top. Finish with a sprig of fresh basil for an extra burst of aroma and color.