Simpson, married to his childhood sweetheart for almost 19 years, had walked out on his wife and kids and into the arms of a younger woman. The breakup surprised his wife, his friends and even Simpson himself. Looking back, he says, it was a classic midlife crisis.
In that we have already provided the definitive answer to this question elsewhere (relying on rum extract), we assume your follow-up is seeking a non-alcoholic substitute for rum (as extracts can be as alcoholic as or more alcoholic than the spirits they replace).
Considerations When Choosing an Extract Substitution. If you only need 1/4 teaspoon of extract, you can substitute just 2 drops of a similar flavored oil instead of the extract. Many extracts substitute well for each other, like almond extract instead of vanilla extract or lemon extract instead of lime extract.