01 - Combine diced mango, grated ginger, lime juice, honey or agave syrup, and 1/2 cup cold water in a blender. Process until completely smooth and no lumps remain.
02 - Pour blended mixture through a fine mesh sieve into a pitcher or bowl, pressing with a spoon to extract liquid. Discard fibrous ginger and mango pulp.
03 - Fill two serving glasses with ice cubes, leaving room for the mocktail mixture.
04 - Divide strained mango-ginger puree between the glasses, filling each approximately halfway full.
05 - Top each glass with chilled sparkling water. Stir gently with a spoon to combine flavors without losing carbonation.
06 - Decorate with fresh mango slices, lime wedges, or mint sprigs. Serve immediately while cold and bubbly.