Everyone has questions about drinking, but it can seem like every bartender (and bargoer) has different answers. Between the old wives' tales, half-truths, and whiskey-soaked conjectures, it's hard to know what to believe, until now. Armed with cutting-edge research and a barfly’s thirst for the truth, cocktail instructor Brian D. Hoefling tackles the most burning questions and longest-held myths surrounding that most ancient of human pastimes—with the science to either back them up or knock them down. From the ins and outs of aging to the chemistry of a beer head and the science behind your hangover,  Distilled Knowledge  provides a complete and comical education that will put an end to any barroom dispute, once and for all.