Prepare the Ginger-Mint Simple Syrup: In a small saucepan, combine equal parts sugar and water along with a few slices of fresh ginger. Bring to a simmer over medium heat, whisking until completely dissolved, about 3–5 minutes. Stir in fresh mint leaves and steep while cooling for 15 to 20 minutes.

Strain and Store the Syrup: Strain the cooled ginger-mint syrup through a fine mesh sieve into a clean jar, discarding solids. Store in the refrigerator for up to a month.

Mix the Mocktail: In a festive glass, add 1.5 tablespoons of the ginger-mint syrup, fill about two-thirds full with freshly squeezed orange juice, and add a splash of lime juice. Stir gently to combine.

Add the Sparkling Water: Top off with sparkling water, filling the glass to the brim. Stir gently to incorporate without losing carbonation.

Garnish and Serve: Garnish with fresh mint leaves and serve immediately with a colorful straw.