Spread granulated sugar on a small plate. Wet about 1/2 inch around the rim of the glass. You can use water or lime juice. Roll wet side of glass in sugar to coat.
Combine remaining ingredients except sparkling wine and garnishes in a cocktail shaker and fill with ice. Shake vigorously for 10 seconds.
Spear the three cranberries onto a cocktail toothpick.
Strain into the prepared glass. Top with sparkling wine. Lay the toothpick on top of rim of glass. Top with the sprig of rosemary.