THE OLD CUBAN

Steps:

• Gently bruise the mint with lime juice in a shaker using a muddler or wooden spoon. Add syrup, rum, bitters and a big handful of ice, and shake until well chilled. Strain into a coupe or cocktail glass and add Champagne.
• With a knife, slit the lime slice halfway through and pierce it with the mint sprig. Perch it on the rim of the glass.