4 oz Tanqueray® Gin
16 oz White grape juice
8 oz pink grapefruit juice
12 oz Lemon-lime soda
4 oz Sour mix (equal parts simple syrup*, lime juice and lemon juice)
7 dashes Aromatic cocktail bitters
Build in pitcher over ice.
How to make simple syrup:
Boil 1 cup of water
Add 1 cup of sugar, stir until dissolved
Remove from heat and allow to cool.
Store in a container in your refrigerator.