Assessment and Qualifications Alliance (AQA) GCSE Food Technology Practice Exam 2026 - Free GCSE Food Technology Practice Questions and Study Guide

The recommended temperature for freezing foods in a freezer is typically -18 degrees Celsius. This temperature is crucial for preserving the quality and safety of frozen foods. At -18 degrees Celsius, the growth of microorganisms is halted, which prevents spoilage and deterioration of food. It also helps maintain the nutritional value, texture, and flavor of the food during storage over time.

While a temperature of -22 degrees Celsius would provide an even colder environment, it is not the standard guideline commonly advised for home freezing and may not be necessary for effective food preservation. Freezing at temperatures much above -18 degrees Celsius, such as 0 degrees Celsius or 5 degrees Celsius, would not adequately freeze food, allowing bacteria to survive and multiply, compromising food safety and quality. Thus, -18 degrees Celsius strikes the right balance, ensuring food safety while facilitating efficient freezing.