Fill a wine glass halfway with ice then add the grapefruit vodka and sweet white wine.
Garnish with a slice of grapefruit and a sprig of rosemary.
Top with club soda and enjoy!
We used Deep Eddy grapefruit vodka which is lightly sweetened.
This recipe was tested using Donna Isabella Sparkling Moscato and Kendall Jackson Vinter's Reserve Riesling. Both were great! The moscato made a sweeter cocktail while the riesling version was more tart.