This drink was served at the now-defunct Butterfield 9 restaurant in Washington, D.C. It was rescued and adapted into the version you see here in The Joy of Mixology by Gary Regan, our favorite mixologist in the universe.
Regan uses Champagne, but you can use Prosecco or any other sparkling wine you like. Similarly, while he calls for orange vodka, other citrus vodkas can be substituted.
Stir the vodka and liqueur with ice, and strain into a chilled cocktail glass or cocktail flute. Top with the Champagne (or other sparkling wine).
- The Joy of Mixology by Gary Regan