system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why Fast Food outlets like McDonalds and Subway have to display nutritional information but my local burger/sandwhich place doesn't.
gpt
The law requiring calorie counts to be posted states that it only applies to restaurants with at least 20 locations.  Other laws related to nutrition have their own conditions that apply specifically to chain restaurants.  As a result, any restaurant that just operates in a single location is not affected by some of these regulations.