Why do the cods sold in supermarkets have no heads? Why are the prices of cods so different?

Cod is a common edible marine fish that is rich in nutrients and is also suitable for baby food. If we go to the supermarket or market to buy cod, we basically buy cod without a head. Why is this? Why does the price of cod vary so much?

Why do the cod fish bought in supermarkets have no head?

Because when fishing for cod, you have to sail the fishing boat to the northernmost part of the Atlantic Ocean to catch it. Once you go to a far place, you have to catch as much cod as possible. After all, if the fishing boat goes to the northernmost part of the Atlantic Ocean,

Then the round-trip fuel cost alone will be a lot, and as long as you catch more, you have to store it in a timely manner. After all, each trip to the sea takes many days. If the cod is not processed in time, it will become dead and smelly. Therefore, the first thing to do after catching the cod is to process it, that is, to remove the head and internal organs of the cod. As for why the head and internal organs must be removed, it is mainly to make it easier for everyone to eat safely, because there are many parasites in the head and internal organs of the cod.

Another reason is that merchants use other fish to sell as cod, and it is difficult to distinguish them without the head. However, authentic supermarkets will not do this.

Why do cod prices vary so much?

The reason for the big price difference is that the cod in the market is fake! There is a kind of fish called oil fish that is often used to impersonate cod. Oil fish contains a lot of wax, which can easily cause diarrhea and lead to the discharge of a lot of oil. Therefore, oil fish is generally prohibited from being sold, and consumers must pay attention when purchasing.

There are very few real cod in our country, because this kind of fish is generally difficult to catch and the selling price is also very high. Generally, cod that costs a few yuan or dozens of yuan per catty is not really cod.

How to remove the fishy smell from cod

It is recommended to use ginger slices or lemon slices (lemon juice) to marinate to remove the fishy smell.

Before marinating, wash the cod several times with warm water, clean the fish bones, cut into slices, then cover with ginger or lemon slices and marinate for more than ten minutes.

In addition, you can also help remove the fishy smell of cod during the cooking process. For example, when steaming cod, you can add ginger and green onions together; when blanching the cod in the pot, you can also add ginger slices to remove the fishy smell; you can also use the flavors of other ingredients to comprehensively cover up some of the fishy smell.

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Cod belongs to the class of bony fishes in the family Gadidae, and its English name is Madus Morhua.

Cod has a slightly flat body, a large head, a small tail, and is generally more than 50 centimeters long. Its body color is generally gray-brown with dark brown spots and stripes. It has a large mouth, a short lower jaw, a tentacle at the front, and small scales.

Cod is a large family in the ocean world, with more than 500 known species, and is the focus of marine fisheries. There are more than 50 species of cod in the world, and the key species include Pacific cod, Atlantic cod, haddock, blue cod, green cod, haddock, and pollock.

Cod has a very strong cold resistance and can survive in cold water environments of -1.9℃ to 2℃. In water temperatures of -2℃, the metabolism of cod can proceed smoothly, and the metabolic rate at this time is equivalent to the metabolic rate of tropical fish in water temperatures of 10℃ to 20℃.