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).
Use it to replace the vanilla measure for measure. Rum or brandy-If you aren't trying to avoid the alcohol, try an equal amount of rum or brandy. Vanilla Bean-Scrape out the seeds from half of a vanilla bean, and use them as a stand in for one Tablespoon of vanilla.