Mainely Lobster And Seafood

Official wording

Potentially hazardous foods are not cooled by an approved method where the food temperature can be reduced from 120oF to 70oF or less within two hours and 70oF to 45oF within four hours.

In plain English

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.