5 issues of BBC Good Food for £5
Tip the gin, raspberries, grapefruit juice and sugar syrup, if using, into a cocktail shaker along with a handful of ice. Shake until the outside of the shaker feels ice-cold.
Double-strain the drink into a champagne flute or coupe glass, then top up with champagne or prosecco. Drop in a raspberry or garnish with edible flower petals.