Sanitation Certification Practice Test

What is a sign that frozen food deliveries should be rejected?

1. Clear labeling on packages

2. Ice crystals on packaging

3. Well-maintained seals

4. Temperature-controlled environments

The correct answer is: Ice crystals on packaging

Ice crystals on packaging serve as a clear indicator that the frozen food has been subject to temperature fluctuations during storage or transportation. When frozen food is properly stored, it remains solidly frozen, and there should be minimal to no visible moisture in the form of ice crystals. The presence of these crystals suggests that the food may have partially thawed and refrozen, which can lead to quality degradation, changes in texture, and potential growth of pathogens when it comes to thawed items. In contrast, clear labeling on packages reflects proper documentation and handling of the food but does not, by itself, indicate the quality or safety of the contents. Well-maintained seals are also an important factor as they help to ensure the product has not been tampered with, yet they do not guarantee the temperature has been consistently maintained. Finally, temperature-controlled environments are essential for the storage and transportation of frozen foods, but their mere existence does not imply that the specific items have remained in optimal condition without inspection for signs of spoilage like ice crystals.