3/4 ounce fresh lemon juice (about 1/2 a lemon, squeezed)
Sprig of rosemary for garnish
Rosemary Simple Syrup
1/4 cup ground rosemary (use an herb grinder, a coffee grinder or a small food processor)
1/2 cup water
1/2 cup sugar
1. Bring the water to a boil, add the sugar and rosemary, and stir until the sugar is dissolved. Remove from heat and steep the mixture off heat for 45 minutes.
2. Strain the syrup through a fine mesh strainer into a container. (See link for the accompanying video that has a visual reference for the depth of color that should be achieved: a light golden syrup).
3. Fill glass with ice.
4. Add gin, lemon and rosemary simple syrup and stir.
5. Top with club soda, stir briefly and garnish with a rosemary sprig.