Authorities say undercover fire marshals arrested Albert Trummer at about 2 a.m. Sunday after he set alight Apotheke's bar top, where he had poured various liquors.
Chief Fire Marshal Robert Byrnes says the stunt sparked a "huge fireball."
Fire officials say the flames created a danger for the dozens of people at the Chinatown bar.
The bartender was arrested on two counts of misdemeanor reckless endangerment.
The 40-year-old Trummer is described as a "cocktail artist" on the bar's website. He told The New York Times that he is a mixologist, not "a pyrotechnic maniac."
Your feedback is important to us! Please complete a brief survey so we may continue to improve 7online.com