Add vodka, cranberry juice, lime juice, and simple syrup to the shaker.
Shake vigorously for 10-15 seconds until well chilled.
Fill a Collins glass with fresh ice.
Strain the mixture into the glass.
Top with a splash of club soda.
Stir gently with a bar spoon.
Garnish with a lime wedge and fresh cranberries.
Notes
The drink can be made sweeter by adding more simple syrup.Fresh cranberry juice works better than cocktail mixes.Store-bought simple syrup works fine, but making it at home is easy. Mix equal parts sugar and water, then heat until dissolved.Keep ingredients cold for the best results.Double strain if you want to remove small ice chips.