N.Y.C. Admin. Code § 20-685: § 20-685 Perishable foods.

It shall be unlawful to sell or offer for sale any perishable food designated by the commissioner in accordance with section 20-686 hereof unless there is stamped, printed or otherwise plainly and conspicuously marked on the top cover or principal panel of its container or any label affixed thereto the statements indicating recommended conditions and methods of storage, and the fact that it is not to be sold after a clearly specified date for human consumption as food.