1 oz of grapefruit juice
1 oz of Lemon Juice
1 oz of Orange Juice
3 oz of soda water
1 tbsp of vanilla ice cream (or ice cream)
1 tsp of caster sugar (or sugar)
Dissolve sugar in juices in a highball glass three-quarters filled with ice. Add soda, top with ice cream, and garnish with fruit. Add straws, and serve.