A lovely and refreshing mocktail that will tickle your senses and your nose with it's subtle effervescence.
In a cocktail shaker, combine 1/2 of the grapefruit juice and the basil leaves and muddle to release the basil oils into the liquid. Add remaining grapefruit juice, aromatic bitters, and ice. Shake vigourously.
Using a cocktail strainer, strain mixture evenly into two goblets, discarding what remains in the cocktail shaker.
Add 1.5 ounces of ginger ale into each goblet and then top with sparkling mineral water until glass is full, about 2 ounces.
Garnish with basil leaves and flower sprigs.