In 1860, while delivering some of his then-famous whiskey from Louisville, Ky., to New Orleans, Augustus Bulleit mysteriously vanished. Though his disappearance has never been explained, one theory is that he encountered a group of thirsty vagrants who disposed of him to acquire his liquid cargo. In 1999, Augustus’s great-great-grandson Tom Bulleit revived the brand. The Diageo-owned distiller’s latest release ages for 10 years in charred American white-oak barrels, rather than the average seven years for the …