Foods that we must freeze before eating

Consume fresh food it is always healthy. However, there are certain foods that are advisable freeze before eating them since that way we avoid certain intoxications or gastrointestinal problems that you may not know about and that we will try to explain to you.

Now that the dates are coming when we are going to cook more than normal and consume products cooked in a special way, it is important that you take into account some tips.

Is anisakis in all kinds of fish?  How to avoid problems with it?


You’ve surely heard of anisakis. It is a parasite that can be found in fish and other foods of marine origin whose larvae pass active into the human digestive system through their ingestion raw or undercooked – which does not end up annihilating the resistant parasite.

According to the OCU, one out of every three fish we eat is infected by anisakis.

Therefore, if you are going to consume fish or shellfish raw or semi-raw This Christmas, such as pickled anchovies, sushi, ceviches, carpaccios, prawns or squid, it is recommended to freeze them beforehand.

What is recommended by health authorities is freeze these products for 5 days. In the event that freezing below 20 degrees can be guaranteed, 48 hours would be sufficient. Refrigerators with two stars do not guarantee that temperature, therefore, we will have to leave them for the recommended 5 days.

However, it is not necessary to previously freeze the fish or shellfish if we are going to fry, bake or grill them, as long as it is ensured that the 60ºC in the center of the piece.

What fish may contain anisakis and therefore is its freezing recommended? Cod, sardine, anchovy, herring, salmon, pollock, hake, whiting, halibut, turbot, mackerel, bonito and horse mackerel.

Foods that we must freeze before eating Photo: bigstock


In the case of toxoplasmosis present in some foods like cold cuts or meats, especially pork, it would also be advisable to freeze it previously, but only in the case of pregnant women.

Toxoplasmosis is a disease produced by a parasite called toxoplasma gondii that at any other stage of our life outside of pregnancy gives practically no symptoms other than some similar to the flu. However, in pregnant women It is very dangerous since it could be transmitted to the fetus causing serious problems.

In these cases, freezing will be similar to that of fish. It is advisable to freeze in refrigerators with temperatures below 20 degree centigrade for 2 days, or for 3 days in the case of a freeze below 10 degrees below zero.

Once again, we will have to look at the freezing power of our refrigerators to leave these foods frozen for more or less days, and thus ensure that we kill the parasites.