New York on Sunday became the first US city to banish trans fats from its restaurants, but the city is facing an uphill struggle in forcing some eateries to display calorie information on their menus.
For the majority of New York's 20,000 restaurants, the transition towards healthier cooking oils seems to have gone smoothly, although some have displayed a degree of reluctance.
At the heart of the fashionable Soho district, "Jerry's" diner abandoned trans fats a long time ago, said chef David Rotter.
"The owner is really health-conscious, he cares about what he would eat and is applying that for the customers," Rotter said.
Popular Katz's Deli switched over to soybean oil about a year and a half ago without any problem, said general manager Rob Albinder.
"It's healthier, and so we figured we'd try it with a healthier type of oil," Albinder said. "It's a good quality product and customers seem to like it, it hasn't affected the flavor in any way."
The New York State Restaurant Association (NYSRA) pointed to difficulties in supplying restaurants with cooking oil alternatives, but even fast-food chains announced that they would join the movement against trans fats.
And, according to city officials, 83 percent of fast-food restaurants are already using frying oils that do not contain artery-clogging trans fats.
"This confirms that the switch is feasible," said Friday New York Health Commissioner Thomas Frieden. "But many restaurants are still using spreads such as margarine that contain artificial trans fat. These products need to be replaced with widely available alternatives."