Toby Cecchini is part owner and bartender at Passerby, a bar in New York’s far West Chelsea neighborhood. He’s also the author of “Cosmopolitan: A Bartender’s Life.” Cecchini tells Anne Strainchamps about his bar and its clientele and what people are looking for when they come to a bar. He also says you really can taste the difference between a martini that’s been shaken and one that’s been stirred and reveals the secret of a great cosmopolitan is fresh lime juice.