2 part(s) Broker's London Dry Gin - (more)
2 Lime Wedges - (more)
1 splash(es) Creme de Cassis - (more)
1 part(s) Pink Grapefruit Juice - (more)
Squeeze the lime wedges into a shaker and add the other ingredients. Fill the shaker with ice cubes and shake vigorously until the shaker is freezing. Strain into a chilled martini glass.