In a cocktail shaker place the mint leaves, turbinado sugar, and lime juice. Muddle together.
Add in the white rum, St Germain, and a few ice cubes. Shake vigorously for a few seconds.
Pour into 2 serving glasses filled with ice, when pouring the drink fill about ¾ the way full.
Top the drink off with soda water.
Garnish with limes, mint leaves, and/or edible flowers if liked.
Notes
Muddle gently: Press just enough to release the oils from the mint without tearing it. Chill your glassware: A cold glass keeps the drink crisp and refreshing. Don’t overfill with soda: Leave room at the top so the drink stays balanced. Use fresh ingredients: Fresh lime and mint make a noticeable difference in flavor.