Question

A shipment of frozen fish arrives at your food establishment. you see that the outside bottoms of the shipping cartons have too much ice and the fish fillets held within the cartons have brown edges. these are signs of:

Answer 1

Excess browning at the edges, ice formation at the bottoms of the containers, and are indicators of thawing and refreezing. While in standard at-home practice of refreezing thawed fish is acceptable, it is not during shipping because it is impossible to tell how long the fish were kept out of a cold environment and may transmit disease (plus, visible damage to the fish decreases salability).

Answer 2

A shipment of frozen fish arrives at your food establishment. You see that the outside bottoms of the shipping cartons have too much ice and the fish fillets held within the cartons have brown edges. These are signs of thawing and refreezing.

Further explanation

It is always nice if you could buy fresh fish, but if fresh is not available or not in the season you can buy frozen fish as a substitute. Always check the expiration date, never use frozen fish that already passed the expiration date.

Avoid buying frozen fish that show signs of excessive moisture, you can see this by the presence of ice crystals. The ice crystal indicates that the product was frozen slowly or it has been thawed and refrozen. The best way to defrost fish is to leave it overnight in the fridge.

When buying fish, check this indicator of freshness below:  

1. Evenly frozen, no ice crystals
2. Bright and glossy
3. Tight wrapping and undamaged packaging. Damaged packaging indicates rough handling and ice can build up inside the package.
4. Clean and have a fresh smell

Learn more

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Keywords: safety food, food handling, identify a good quality fish, a frozen fish