1 tsp of grenadine syrup
1 oz of Dark rum
1/2 oz of white rum (or Light Rum)
1/2 oz of Lemon Juice
100 ml of Coca-Cola (or coke)
1 tsp of pernod licorice liqueur
Funnel the rums, pernod, lemon juice and grenadine into one small cola bottle (185-200ml), roughly half-filled with cola. Briefly invert the bottle to mix the ingredients. Place in the center of a large glass (tankard, stein or british pint), and fill glass with broken ice. Add a straw to the bottle.