Begin by rolling approximately 4 medium lemons on the countertop to loosen the juices within. Cut the lemons in half and use a citrus juicer for maximum extraction, aiming to yield about 1 cup of fresh lemon juice.

In a mixing bowl, combine the freshly squeezed lemon juice with ½ cup of granulated sugar. Stir until the sugar is fully dissolved, allowing about 2-3 minutes for this process.

Chop about 10 fresh mint leaves into small pieces, adding them to the lemon-sugar mixture. Let it sit for about 5 minutes to infuse.

In a large pitcher, pour in 2 cups of chilled sparkling water and mix in the lemon-mint infusion gently to combine.

Fill tall glasses with ice cubes. Pour the Minty Lemonade Fizz over the ice, filling each glass to the brim.

Top each glass with a fresh sprig of mint for garnish.