Ingredients:
- 1/2 (or less) cup sugar, preferably superfine
- 1/2 cup strained fresh lemon juice (about 2-3 large lemons)
- 1/2 (or more) cup chilled vodka
- ice cubes
- Prosecco
- Rosemary sprig
- Lemon slices, optional
Directions:
Place large martini glasses in the freezer. Combine the sugar and lemon juice in a small bowl; whisk until the sugar dissolves.
Combine the lemon syrup and the vodka in a martini shaker. Add ice cubes. Cover and shake 8 to 10 times, then strain the mixture equally into the very cold martini glasses. Add about 1/4 cup chilled Prosecco to each glass. Garnish each martini with a lemon slice if desired, put a twig of rosemary on top before serving.