For the cocktail:

1. You will build your cocktail in the glass.
2. Take the Collins glass, pour in the simple syrup, then fill the glass with ice, pour the gin and fresh lemon juice over the ice, and top the cocktail with the soda water.
3. Garnish the cocktail with a lemon wheel wrapped softly around the Luxardo cherry on a pick across the rim of the glass.

For the simple syrup: 

1. In a small saucepan, bring the water and sugar to a boil, stirring until the sugar is dissolved.
2. Remove the saucepan from the heat. Allow the syrup to come to room temperature. Then pour into a container.
3. This simple syrup will last a minimum of 2 weeks as is in the refrigerator or if you add a tablespoon of vodka or rum it will last longer.