1. In a saucepan, dissolve your sugar and water together over medium high heat to make the simple syrup. When dissolved, remove from heat and put 5 stalks of sage in the pan, let steep for 30 minutes.
2. In a cocktail shaker, combine the grapefruit and lime juice with the sage simple syrup. Shake lightly and then transfer the contents to a small rocks glass.
3. Fill the rocks glass with prosecco and then garnish with a small lime wedge and fresh sage.

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