Into a pitcher 1/3 full of crushed ice add:

6 oz. Barbados rum
2 oz. Black Bacardi rum
1 oz. apricot brandy
Juice of 4 fresh limes or lemons
1 1/2 oz. Barbados Falernum
4 dashes Angostura bitters

Churn vigorously with "Zwizzle stick" until frothing head appears and strain into sour glasses. Can be mixed in cocktail shaker just as well. Serves 6.