Store
Shake the vodka and raspberry liqueur with ice, until just chilled. Strain into a prepared martini glass. Fill the glass with champagne or sparkling wine and garnish with an orange twist.
To rim the glass, pour sugar crystals onto a small plate. Rub an orange slice around the edge of a chilled martini glass. Press half of the rim into the sugar crystals.
Experiment with flavored vodkas to vary the taste—for example, a raspberry vodka to heighten the berry flavor or a vanilla vodka to take it in a different direction.