In addition to all kinds of chicken, duck and fish, prawns are also a necessary ingredient for many families.
For the sake of freshness, many people are willing to get up early in the morning to buy live shrimp, but more people prefer cheaper frozen shrimp.
Everyone often thinks that frozen shrimp can be kept at low temperature and will be very fresh, but in fact, these frozen shrimp have long been dead for a long time!
Common frozen shrimp only have two states: "bent" and "straight", when choosing frozen shrimp, how to choose?
"Bent" shrimp fresh, "straight" shrimp fresh?
If you want to buy shrimp in pursuit of freshness, go directly to the fish market to buy live shrimp that are absolutely fresh, but if you want to save a little of your own small treasury, there are also frozen shrimp to choose from.
It's just that when choosing frozen shrimp, you have to pay attention to some details, otherwise what you buy back may be shrimp that have been dead for a long time and have been frozen repeatedly!
You can't tell if the frozen shrimp are fresh by smell, and if they are too stale, you can barely tell by the color, but this is rare.
Frozen shrimp are divided into "live shrimp quick-frozen" and "dead shrimp frozen", but as you can see from the name, it is definitely the former that is fresher.
So how do we tell the difference between the two?
To use one of the most common principles to make an analogy, that is, "thermal expansion and cold contraction", when people feel cold, they will unconsciously curl up, which is also a little reasonable on the shrimp.
When the live shrimp is quick-frozen, the moment it is frozen, the shrimp does not die directly, and its cells and muscles still have a certain degree of activity.
At this moment, the vast majority of shrimp are often in a curved state, and few are straight, but those shrimp that have died are actually straight and straight, after all, they are dead, so the whole shrimp body is paralyzed.
But there is another kind of shrimp that we commonly see, which is different from this frozen shrimp, that is, "chilled shrimp", how should we choose this kind of shrimp?
"Chilled shrimp"
When we go to the supermarket to buy fresh food, most of the meat is taken out of the cold storage and thawed, and there is another difference, the underside of the meat is covered with ice cubes.
This is what we call "chilled", and when the shrimp is placed on top, it is chilled shrimp.
One of the advantages of buying this kind of shrimp back is that it saves the time of thawing, and it can be cooked directly.
To be precise, the "predecessor" of this chilled shrimp is still frozen shrimp, but the difference is that the frozen shrimp will slowly reduce the freezing effect during transportation.
When they arrive at the delivery location, the frozen shrimp are thawed and placed directly on the ice-covered shelves.
Generally speaking, this kind of chilled shrimp is relatively fresh, and it can be said that the goods of the day are sold on the same day, and it is not clear whether the shrimp merchants who have not sold out will have a "special sale".
But there will also be some black-hearted merchants who repeatedly freeze the shrimp that can't be sold, and after they are still not sold, they will be put on these ice-covered shelves to sell "shoddy".
At this time, how can we distinguish whether this is a "rotten shrimp" that has been dead for a long time?
There are many ways to identify this shrimp, the most common way is to see if the shrimp head and shrimp tail are separated, when you pick up these shrimp, you find that the shrimp head and shrimp tail are about to separate, then don't choose.
In this case, the shrimp will not be placed for a day or two, the time will be longer, and the shrimp head and tail will be separated, which means that the shrimp meat has begun to rot, so it will become soft, causing the shrimp head and tail to detach.
If you are delusional about buying these shrimp cheaply and still being able to cook a big meal, then you are thinking too much, because the taste of this shrimp has a fishy smell!
In addition to looking at whether the head and tail of the shrimp are falling off to tell if the shrimp is fresh or not, we can also tell if the shrimp is fresh by identifying the color of the shrimp shell.
Stale shrimp shells are generally red, this red is not the kind of red state after cooking, carefully observe the live shrimp in the water, and some dead shrimp that have changed color can be clear.
The color of the shrimp shell is red, because there is no reasonable freezing during transportation, or when the merchant stores it, and the shrimp body will be heated up, and the color difference will appear.
Another method is also the most commonly used method by many people, that is, pinch it with your hands to feel whether the shrimp body is particularly soft, if it is very soft, it means that it is not fresh.
The soft body of the shrimp also indicates that the shrimp meat has begun to rot, which is more serious than the detachment of the head and tail of the shrimp, and even has a lot of water inside.
If it is fresh, the shrimp body will feel that the shrimp meat is very full, and the meat is particularly tight, which is still very easy to distinguish, but when it rots to this extent, the merchant will generally not choose to sell it, after all, it can be seen at a glance that it is not fresh.
Even after this kind of shrimp is bought, if it is not eaten in time or frozen and preserved, it is easy to stink!
Therefore, when buying shrimp, you only need to keep three points in mind! If there are live shrimp, you should not buy dead shrimp, if you buy frozen shrimp, you should not buy straight shrimp, and you should not buy those with color difference.
Like those that are motionless in the water, the shrimp are straight, the shrimp are sticky, the shrimp are black, and the smell is obvious, these are stale shrimp.
When we eat shrimp, there will be many controversies, such as whether the shrimp head can be eaten, and whether the shrimp line will have an impact on the body?
Shrimp heads are actually not recommended to eat, because shrimp heads contain more toxins, and the internal organs of shrimp are all in the head, and there may be no digested food residues in them.
And the heavy metals in the water pollution we often talk about will also be stored in the shrimp head, so it is generally not recommended for people to eat the shrimp head.
The shrimp line is actually the digestive intestine of the shrimp, and there will be some undigested food residues and metabolites in it, but in fact, the shrimp line has no effect after eating.
In the process of shrimp being cooked at high temperature, even if there will be some residue in the shrimp line, it will be eliminated by high temperature sterilization.
But generally speaking, they will choose to go to the shrimp line, because the shrimp line will have an earthy smell, which will affect the taste of the shrimp meat, after all, who doesn't want to eat cleanly?
Therefore, when buying shrimp on a daily basis, we have to keep our eyes open, so as not to buy stale shrimp that have been left for many days, if we eat bad stomach, then the price of this meal is a bit "exceeded".