Which of the following practices does not enhance food safety?

Eating or drinking while preparing food poses a significant risk to food safety. This practice can lead to the contamination of food through the introduction of pathogens or harmful substances from saliva, as well as physical contaminants like food particles or drink spillage. While the other practices mentioned, such as regular handwashing, maintaining clean food contact surfaces, and using separate equipment for raw and cooked foods, all contribute to reducing the risk of foodborne illnesses, eating or drinking during food preparation creates potential hazards. Ensuring a hygienic cooking environment is crucial for preventing contamination and protecting consumers' health.