New York Codes, Rules and Regulations
Title 1 - DEPARTMENT OF AGRICULTURE AND MARKETS
Chapter VI - Food Control
Subchapter G - Inspection of Meat, Meat Products and Poultry (Article 5-B Agriculture and Markets Law)
Article 1 - Meat and Meat Products
Part 316 - Marking Products And Their Containers
Section 316.16 - Marking custom prepared products

Carcasses and parts therefrom that are prepared on a custom basis under the provisions of Part 303 of this Article shall be marked at the time of preparation with the term "Not for Sale" in letters at least three-eighths inch in height, except that such products need not be so marked if in immediate containers properly labeled in accordance with the regulations in section 317.16 of this Article. Ink used for marking such products must comply with the requirements of section 316.5 of this Part.