1 egg white (this makes the froth)
1 part white rum (can replace with coconut rum)
1 part white wine
1/2 part simple syrup
1/2 part lemon juice
1 part orange juice
orange or lemon peel for garnish
In an ice-filled cocktail shaker, combine all the ingredients EXCEPT the Champagne/sparkling wine. Shake vigorously. Add to champagne coupe and top up with Champagne. Garnish with the orange or peel.