Dish machine or sinks not set up or working properly, or missing sanitizer test kit and gauges.
Missing hair or beard restraint, dirty work clothes, jewelry, or painted/artificial fingernails during food prep.
Scoops and other in-use utensils stored improperly (e.g. handle down in the food).
Surfaces that touch food — cutting boards, ice bins, dish racks — soiled or not sanitized.