Rum & Cola (Blacktail)

Name: Rum & Cola (Blacktail)
Prep time: 5 min
Cook time: 5 min
Total time: 5 min
Yield: 1 cocktail
Cuisine: Cocktail
Ingredients: 1 dash Angostura bitters; 23 ml Cola Syrup; 30 ml Puerto Rican Rum; 120 ml Champagne; 1⁄2 tsp Fernet Branca