To make rosemary syrup, combine equal parts sugar and water in a saucepan (e.g., 1/2 cup of each). Add a few sprigs of fresh rosemary.
Bring the mixture to a simmer over medium heat, stirring until the sugar is fully dissolved. Let it simmer for about 5 minutes, then remove from heat and allow the rosemary to steep as the syrup cools.
Once cooled, strain the syrup into a clean bottle or jar, removing the rosemary sprigs.
Cocktail :
Add 4-5 fresh cranberries to a rocks glass.
Pour in the vodka, rosemary syrup, and lemon juice.
Fill the glass with ice cubes.
Add a little club soda for a light, fizzy result and stir the cocktail with a spoon.
Place a sprig of rosemary on top for an aromatic and festive garnish.