FDA’s “Nutrition Labeling of Standard Menu Items in Restaurants and Similar Retail Food Establishments” regulation requires food retailers with 20 or more locations to implement menu labeling.
The rule requires calorie labeling (and additional nutritional information upon request) for standard menu items at covered establishments, i.e., establishments meeting the following criteria: 1) being part of a chain with 20 or more locations, 2) doing business under the same name, 3) selling substantially the same menu items, and 4) selling restaurant type foods/ – The Food Marketing Institute