35ml fresh lemon juice
1 tsp simple sugar syrup, made by mixing equal parts caster sugar and boiling water, stirring until dissolved
45ml Bloom Premium London Dry Gin
1 tsp Grand Marnier
5 mint leaves, plus a sprig to garnish
Fever-Tree Elderflower Tonic Water, to top up
long strip of grapefruit peel, to garnish
1 Pour all the ingredients, except the tonic water, into a cocktail shaker filled with ice.
2 Shake, then double-strain into a coupette. Top up with the tonic water and garnish with grapefruit peel and mint leaves.