1Pour cherry syrup on a small plate and place granulated sugar on another. Working with one champagne glass at a time, invert it and dip the rim in the cherry syrup, allowing any excess to drip off, then immediately dip the rim lightly in the sugar. The sugared rim should be a light pink color.
2Place 3 maraschino cherries, a sugar cube, and 2 dashes of bitters in each champagne glass. Fill the glasses with sparkling wine and serve immediately.