Recent times.
Heilongjiang Harbin tourism is popular all over the network.
With the influx of southern tourists into Harbin.
The local cultural tourism projects are also constantly being updated.
For example, in order to take care of southerners who don't know how to eat frozen pears.
Launched the frozen pear plating.
The exquisite dining experience has won praise from tourists.
The frozen pears that made southern netizens curious.
It is a Tohoku specialty.
Not only local adults and children love to eat.
It is one of the hospitality items for guests at home in winter.
Source: Guangming.com.
So. How do pears become frozen pears?
Can we make our own at home?
What other fruits can be frozen besides pears?
The origin of frozen pears.
When it comes to the cold, you can't avoid the land of the Northeast. And every winter, a mysterious fruit that Northeast friends love to eat will become the focus of curiosity of netizens across the country: that is, Northeast people bring a basin of cold water after tea and dinner in winter, and several black fruits soaked in it - frozen pears.
Compared with rock sugar gourds, which require a certain amount of modern technology, frozen pears have a longer history. As early as more than 1,000 years ago, the Khitan people of the Liao Dynasty had the habit of eating frozen pears. At that time, after the Khitan people harvested the fruit in autumn, they put it outdoors, pressed the surface with snow, and then took it out to thaw and eat it when needed.
Pang Yuanying of the Northern Song Dynasty also recorded in the "Wenchang Miscellaneous Records" that "Yu Feng envoy to Northern Liao, to Songziling." Pressed sand pears, frozen and inedible. Soak in cold water for a long time, and the ice will freeze outside. It has been knocked away, and the pear has melted." In addition, Gansu, Qinghai, Ningxia and other places in the northwest also have records about frozen pears.
Source: Xinhua News Agency.
How do pears become frozen pears?
In Heilongjiang Province, frozen pears are generally selected from late September to early October ripening late-ripening pear varieties (common Nanguo pear, Jianjiao pear, Huagai pear), after picking, put into cartons or plastic baskets, stored in a shaded pergola or well-ventilated room;There are also plastic sheets that are laid directly on the floor and placed directly on them, or stored in piles. When the temperature drops in winter, the pears are naturally frozen.
During the freezing process, the aroma composition, sugar composition, organic acid composition, texture and other characteristics of the pear will change. Relevant studies have shown that after frozen storage, the aroma of frozen pears becomes lighter, and the total acid content decreases by 125%, soluble solids and glucose content increased by about 20%. As a result, pears become sweeter in taste when eaten at low temperatures.
In addition, during the freezing process, the cell structure of the frozen pear is destroyed, and the polyphenol oxidase in the cell combines with oxygen to enzymatic browning to form colored substances, which is the reason why the skin of the frozen pear is black. After frozen storage, the hardness of frozen pears is greatly reduced, and the flesh becomes pulpy.
Before eating frozen pears, you should put them in cold water to "slow down" and thaw them. When you take a small bite of the skin, the thick and juicy flesh is absorbed immediately, and the juice is sweet and delicious, and it is like a "natural jelly" without any additives.
Source: The Paper.
Can you make homemade frozen pears in the refrigerator?
Recently, there have been endless tutorials on homemade frozen pears on the Internet, but the lowest freezing temperature of household refrigerators is only minus 18 degrees Celsius, while the lowest temperature in the Northeast can reach about minus 50 degrees Celsius, and pears can be frozen overnight. If you use the refrigerator, it will take several days for the skin to change color, and it may be a long way to freeze into a real frozen pear, and even if it resembles, the composition of the flesh will be slightly different. Therefore, if friends in the south want to make frozen pears in the refrigerator, they don't have to blindly pursue the skin of the pears to turn black.
Although household refrigerators can refrigerate, they cannot meet the requirements of quick freezing, and freezing fruits in household refrigerators or freezers can seriously lead to cell dehydration. Although it seems that there is no difference on the surface, if you bring the frozen hard fruits back to room temperature, it will not take a few minutes to find that some fruits have turned into a soft puddle, and you will lose your appetite.
Frostbitten fruits and vegetables are not only destroyed in nutrients, but also spoiled easily. The loss of large amounts of juice can also make the pulp of the fruit more susceptible to decay. Therefore, the vegetables and fruits frozen at home, if they are not in place in one step, will be wasted.
Therefore, it is not recommended that you make your own frozen pears at home, and if you want to try them in particular, you must pay attention to the variety of pears. In addition, do not thaw repeatedly, this practice will lead to the increase of bacteria, and even the rot of pears, which is likely to cause gastrointestinal diseases after eating, so you can keep it in the refrigerator for a few days. Good frozen pears should be white on the inside when cut, and if they taste like wine, sourness, etc., don't be careless, just throw them away.
Source: Xinhuanet.
Frozen goods on the tip of the tongue.
Ice and snow can also be tasted?For those living in the northeastern region of our country, the answer is not only yes, but there are many ......When winter comes, people compete to put all kinds of food outside in the cold and cold, and to a certain extent, these foods that have been baptized by the cold can be regarded as adding to the "taste of ice and snow".
Source: Xinhuanet.
Even at minus tens of degrees Celsius, the Northeast Daji is still colorful - purple and black frozen pears, bright orange frozen persimmons, red frozen flower red, ginger frozen yellow peaches ......All kinds of fruits are laid out in the open air, and the surface is covered with a layer of white frost.
Let's talk about other "frozen foods" that are favored by Northeast people.
Source: Xinhuanet.
The frozen persimmon is like a crystal treasure box, the inside slowly melts, and the flesh turns into a bag of sweet and thick honey. Lift the dark brown lid and insert it into a straw to suck it up. If you dig it with a spoon and eat it, it's like eating ice cream, and the cold texture makes you want to stop.
Source: Xinhuanet.
Frozen flower red, also known as frozen begonia fruit, resembles an apple in appearance, but its body size is much smaller and more delicate than an apple. In the jelly fruit world, it is also fragrant. The begonia fruit itself has a strong sour taste, and many people are reluctant to eat it directly. However, after freezing the fresh begonia fruit, the flesh is hard, sweet and sour, similar to the taste of frozen hawthorn, and mixed with the unique aroma of begonia fruit.
Source: Xinhuanet.
Frozen yellow peach is a rookie that has just risen in recent years. The yellow peach is peeled, tossed in half, and frozen directly, so that it can be eaten directly. You can also DIY canned yellow peaches by yourself, which is economical and healthy. There are also similar ones: frozen strawberries, frozen lychees, etc., which have become popular in the past two years.
Be sure to pay attention to the method of DIY food at home.
Although homemade food is cheap and convenient.
But I don't understand how it works.
It is easy to bring harm to yourself.
Online tutorials should not be tried lightly.
Learn about the process of making food before you get started.
In this way, you can enjoy the food at the same time.
It also ensures food safety.
* Shangguan News, Digital Beijing Science Center, The Paper, Authentic Scenery, China Meteorological Data.
Edited by Wang Yiqing (intern).
Editor-in-Chief丨Jiang Lin.
Supervisor丨Zhong Qian.
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