Final answer:
The corn/black bean blend must be thawed in the refrigerator for at least 4 hours before being added to salads.
Step-by-step explanation:
The corn/black bean blend must be thawed in the refrigerator for at least 4 hours before being added to salads. It is important to thaw frozen foods slowly in the refrigerator to ensure food safety. Thawing in the refrigerator at temperatures below 4 degrees C (40 degrees F) inhibits bacterial growth and helps maintain the quality of the food.