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.