Why does fish smell like ammonia after cooking if it was frozen?

Frozen fish does not usually smell like ammonia after cooking. If your fish smells like ammonia after cooking, it is likely due to *Pseudomonas* bacteria that produce trimethylamine, a compound that smells like ammonia. This can occur when fish is not properly stored or handled.

To avoid this issue, make sure to:

- Buy fresh fish that has been properly refrigerated or frozen.

- Store fish in an airtight container in the coldest part of your refrigerator or freezer.

- Avoid storing fish for longer than 2 days in the refrigerator or 3 months in the freezer.

- Thaw frozen fish in the refrigerator or under cold running water, never at room temperature.

- Cook fish until it is opaque throughout and flakes easily with a fork.