These caramels are soft and addictive, with just a hint of rum. If you want a stronger rum flavor, I suggest using rum extract or flavoring in place of the vanilla, rather than add more rum, as too much liquid will cause these to not set up. If you prefer your caramels alcohol free, you can omit the rum all together, just keep in mind that this will result in a firmer caramel. And of course, if you want to play with other flavors, you can always replace the rum with other liqueurs or extracts. Grand marnier caramels, here I come!