Add the mint leaves and lime juice to a highball glass, then gently press and twist for 1 minute with a muddler or the back of a wooden spoon. The mint should smell sweet and strong, and the liquid should look slightly cloudy without shredded green bits.

Pour in the honey simple syrup and stir to combine with the muddled mint and lime. The syrup should blend in smoothly so the sweetness tastes even from the first sip to the last.

Top with the sparkling water and stir lightly to mix without knocking out too much fizz. The drink should look lively and bubbly, with the mint floating through a pale, lightly cloudy base.

Finish with ice and garnish with lime slices, a sprig of mint, and or fresh fruit if you like. Serve right away while the bubbles are still brisk and the aroma is at its freshest.