Add your ice in your glass. Pour over the gin and cranberry juice. Fill up with grapefruit soda.
Garnish with a lemon wedge.
Video
Notes
Tip: Add your cranberry juice as ice. Freeze the juice in plastic ice cube freezer bags and use it instead of regular ice. Add 1 more oz for more cranberry flavor. A simple sugar syrup is made from mixing boiling water with sugar in ratio 1:1. Let cool and use in your drink.