Final answer:
Food-contact surfaces in constant use should be cleaned every four hours to prevent contamination. Handwashing, proper storage, and thorough cooking are also vital for food safety.
Step-by-step explanation:
When a food-contact surface is in constant use, it should be cleaned every four hours. This practice is essential to reduce the risk of contamination and the spread of foodborne diseases. Regular handwashing is one of the most effective methods to prevent these diseases. Proper food storage, such as rotating food in the pantry and checking expiration dates, is also crucial. Washing produce even if you don't eat the rind or skin can prevent cross-contamination. Thorough cooking is necessary to kill bacteria, requiring an internal temperature of at least 74 degrees C (165 degrees F) and using a cooking thermometer to ensure safety.