Combine all the ingredients expect the sparkling wine in a shaker and fill with ice. Shake to chill. Double-strain into a chilled glass, top with the sparkling wine and garnish.

    Tools:muddler, shaker, strainer, fine strainer
    Glass:coupe
    Garnishes:mint leaf

Ingredients
    1½ oz. aged rum
    ¾ oz. fresh lime juice
    1 oz. simple syrup (1:1)
    2 dashes Angostura bitters
    6-8 mint leaves
    2 oz. dry sparkling wine