If you don't have Kahlua you can substitute:
1 teaspoon coffee extract per 2 tablespoon of Kahlua needed. OR>1 teaspoon instant espresso powder per 2 tablespoon of Kahlua
Ingredients include: rum, sugar, vanilla bean, and arabica coffee.
1 cup water
1 cup brown sugar
4 teaspoons instant coffee
1 cup rum
4 teaspoon vanilla extract