Tipping after a meal is a highly individual preference. Some food lovers will leave huge tips even if the soup arrives cold and the beer warm with the waitstaff nowhere to be found, while other customers tip frugally after receiving five-star service at a busy restaurant.Certain tipping norms have emerged nationwide, however, even in New York City. “Assuming that the diner is not a scrooge and the service was not atrocious,” according to U.S. District Judge J. Paul Oetken of the Southern District of New York …