Seeing that the Chinese New Year is coming in another month, I believe that many families have begun to prepare ingredients for the New Year one after another.
Sausages and bacon are essential, and of course prawns are on everyone's menu.
Some people like it fresh and will go to buy live shrimp on the day they eat it.
For most people in inland cities, because live shrimp is generally expensive and difficult to store, they are keen to buy frozen shrimp from supermarkets.
Then a question arises, is this shrimp really fresh?
How do you judge it? It's actually very simple, just pay attention to whether the shrimp is "bent" or "straight".
After all, these two states of shrimp are very different in all aspects!
The statements in this article are based on reliable sources of information and are detailed at the end of the article
How to identify frozen shrimp quality
Relying on the freshness of the shrimp in the "straight" and "curved" states, we generally use it to identify frozen shrimp.
Because for live shrimp, it is very intuitive whether they are fresh or not, whether it is by their activity or smell, it can be easily distinguished.
But if it's frozen shrimp, because they're dead and covered in a thick layer of ice, it's hard to tell for sure.
Some people may think that frozen shrimp is dead shrimp, and you ask it to be fresh, won't it be outrageous?
Looking at it this way, there is indeed a point, but if the purpose of our judgment is to distinguish between "live shrimp directly frozen" and "dead shrimp frozen", wouldn't it be better to understand?
If the live shrimp is directly frozen, the cells and muscles of the shrimp are still in an active state and can expand and contract normally.
In this case, the shrimp's body is bent in most cases. Because today's various pneumatic, liquid nitrogen freezing and other equipment can approach the effect of "instantaneous" freezing.
At this time, the live shrimp will be frozen in its most primitive form because the body has not yet reacted.
And for shrimp that have died before freezing, their form has long been out of control.
In addition, the muscles have lost their activity and are already in a limp state, at this time they generally do not bow over their bodies but are long.
Of course, when they are put into the freezer tray, they will be artificially fixed, resulting in a change in their physical state.
In fact, there is no need to worry, the state at this time will be easier to distinguish, because in the case of its own muscles cannot be controlled, the shape of the shrimp will become very unnatural.
If it is a shrimp that has died and is frozen in large quantities and tries to sell it, the form of this part of the frozen shrimp must be crooked, and if this is the case when you see it in the freezer, it is recommended that you buy it with caution.
Of course, in addition to this kind of frozen shrimp wrapped in ice in the supermarket, there is also a kind of "chilled shrimp" that also needs our special attention.
What is "Chilled Prawn"?
The shrimp we see in the supermarket is a live shrimp in the aquarium, which is more fresh and guaranteed, and of course the price will be more expensive.
There is also the frozen shrimp mentioned above, which is directly in the freezer for everyone to choose. It is very convenient to buy them at home and keep them, and it is very easy to judge whether they are fresh or not by using the methods taught above.
Another common type is "fresh shrimp" that is sold on ice. Compared with live shrimp, they have lost their lives, and frozen shrimp do not have a heavy ice wrap, and they can be eaten directly without thawing when they are bought home.
Normally, they should be frozen from live shrimp for easy transport and storage. Within a certain period of time, it can be thawed daily on demand and then sold on ice-covered shelves.
If you can ensure that they are in stock before freezing, the nutritional value of these chilled shrimp is no different from that of fresh shrimp.
On the contrary, because these shrimps have lost their gas, it will be more convenient to remove the shrimp line and trim when they return home.
However, during this period, it is inevitable that some unscrupulous merchants will freeze some dead shrimp and sell them again.
If the dead shrimp is frozen, we can also judge it by the two forms of "straight" and "curved" that we gave to you earlier.
But now these shrimps have no ice shells, and they are exposed to the fresh shelves, and the shape is no longer the most primitive.
At this time, if we want to tell if they are new or not, we have to change our thinking.
The first thing is to look at the connection between the shrimp head and the body, although the chilled shrimp has undergone a series of tosses of freezing and thawing, the state must be greatly reduced.
However, for shrimp that are frozen alive, the impact is minimal.
On the contrary, those shrimp that died before freezing were not in good condition, and their body muscles were also very relaxed. After freezing and thawing, most of the shrimp heads and bodies are in a state of imminent detachment.
We can use this as the most standard for selecting shrimp, and select those shrimp heads and necks that are more firmly connected, which will generally be fresher.
The second is to pinch the body of the shrimp when selecting shrimp to feel whether it is very soft, which is the state that only stale shrimp will have.
High-quality chilled shrimp are directly frozen from live shrimp, so the meat is firmer, and even after repeated thawing, this will not happen in the short term.
Of course, even if the shrimp are frozen, they need to be eaten as soon as possible, because the longer they are stored, the worse the quality will become.
I learned how to choose shrimp, and the production of shrimp after buying it home is also a university question, for our health, there are some places that must be paid attention to!
Don't let eating shrimp affect your health
Before cooking the shrimp, be sure to wash the shrimp thoroughly to avoid food poisoning or bacterial residue due to the water in which the shrimp originally lived.
When eating shrimp, many people will think that it is a pity to eat shrimp with so much money, and only eat shrimp tails with such a big head.
So even the shrimp head can be eaten, and it will never be let go.
This practice is wrong, because the internal organs of shrimp are present in the shrimp head, so the substances absorbed by the shrimp in the water will be stored in the shrimp head, and the heavy metal content in the shrimp head is much higher than that of shrimp meat.
On the contrary, everyone thinks that the shrimp line is dirty, but there is actually no safety problem. It may be because it affects the taste and appearance of eating, so everyone generally picks the shrimp line before making it.
When we make shrimp, we are the same as all seafood or parallel goods, try to ensure a "fresh" word, and pursue the original taste.
Boiling and steaming are generally the best ways to eat, and try not to eat fried.
However, it still depends on personal preference, because for today's young people, it seems that eating happily and satisfying their appetites is more important than health.
There are also many people who say that shrimp and vitamin C will have any contraindications when they are eaten together, but after understanding them, they found that they are all nonsense.
Many dieters feel that shrimp has a high protein content, and it is not easy to gain weight after eating. But everyone must pay attention to not eating too much, otherwise it will be counterproductive, because carbohydrates and vegetables are equally important.
I hope that the method of selecting shrimp with "bending" and "straight" in this article can help everyone get out of the misunderstanding of buying shrimp and make our health more secure.
Text丨Kang Kang wrote something
Editor丨 Kang Kang writes something
Resources
[1] CNKI - How to choose shrimp and crab food http://t.cn/A6jzY9oB
[2] CNKI - Shrimp is not to be eaten indiscriminately http://t.cn/A6jzQLgt
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