Del Professore Bitter LiqueurNamed after Professor Jerry Thomas, an iconic 19th century bartender and cocktail pioneer, Del Professore Vermouth and Spirits are produced by a collaboration between Federico Ricatto, the historic producer Carlos Quaglia and the passionate Jerry Thomas Speakeasy in Rome. To obtain its fine flavor, the Bitter Del Professore ingredients are treated with the greatest of care. Botanicals include a fresh bitter orange peel infusion, hand cleaned wild