By Me Boba Tea

Official wording

Label all potentially hazardous foods for use with Time as a Public Health Control implementation with the date and discard time. The discard time shall be 4 hours after food preparation has begun or after removing from proper temperature controls of 41°F or 135°F. Discard potentially hazardous foods, under Time as a Public Health Control, when 4 hours have elapsed. Obtain written approval for Time as Public Health Control from San Francisco Environmental Health., 114047, 114049, 114051, 114053, 114055, 114069(b) - Elevate all food at least 6 inches off of the floor to prevent contamination. Properly label bulk ingredient/food containers with common name.

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.