Using a lemon wedge, rub the cut-side down the side of a coupe or Nick & Nora glass to paint a stripe of lemon juice. Holding the glass over a plate or cutting board, dust with the Matcha Cocktail Rimmer.
Add gin, lemon juice, and lime leaf syrup to a cocktail shaker. Shake over ice. Strain into prepared glass. Float the lime leaf on top of the drink. Enjoy!
Combine sugar, water, and lime leaves in a small saucepan over medium heat. Simmer, stirring occasionally until sugar is completely dissolved. Remove from heat and let cool to room temperature.
Strain through a sieve (to remove solids) into an airtight glass jar. Keep in the fridge for up to 1 month.