30 ml Campari
60 ml prosecco
60 ml freshly squeezed grapefruit juice
Dash of Fevertree Aromatic Tonic, or tonic of your choice
Slice of pink grapefruit or lime, to garnish

Pour Campari, prosecco, grapefruit juice and tonic into a glass.
Fill with ice and garnish with a slice of grapefruit or lime.