Rethermalization is the process of reheating pre-cooked or frozen food to a safe serving temperature before consumption. This method is commonly used in food service industries, such as hospitals and schools, to ensure that meals are both safe and palatable. It typically involves using various techniques, such as steam, convection ovens, or microwave heating, to evenly distribute heat and maintain food quality. Proper rethermalization is crucial to prevent foodborne illnesses and ensure that the food retains its intended flavor and texture.