Step 1.
- In a shaker, muddle the fresh mint leaves with lemon juice and elderflower liqueur to release the mint's flavor.
Step 2.
- Add the gin to the shaker along with ice, then shake well to combine.
Step 3.
- Strain the mixture into an Old Fashioned glass filled with ice.
Step 4.
- Top with soda water to taste.
Step 5.
- Garnish with a sprig of mint and a lemon wheel.