Food was not kept cold enough, hot enough, cooled fast enough, or cooked or reheated to the right temperature. Bacteria grow quickly in the "danger zone" between 41°F and 135°F, which makes this one of the most important food-safety checks.
Posting of permit; mobile establishment name easily visible
In plain English
A required permit, food safety certificate, trained manager, or posted sign was missing or not current. These show the business is following the rules and has trained staff.