What is cold coffee? What does Lengjie mean? Preparation method of cold-extracted coffee

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What is so powerful about cold coffee that can suddenly become popular all over the world in recent years?

Why go to so much trouble to make cold coffee? Isn't it good to have a hot drink in the morning? Or do people stop drinking hot coffee? Don't you put your coffee in a glass bottle of juice every morning, and you will become a marginal person?

Of course not. This is not the case at all. In addition to the current trend, there are more reasons why cold coffee is popular. Let's compare it from a scientific point of view to see the difference between cold coffee and ordinary hot coffee.

We all know that the higher the temperature, the more ingredients dissolve out of coffee. Generally speaking, the optimum water temperature for brewing coffee is between 90.5 and 96 °C, but the water temperature of cold-extracted coffee is much lower than this value. Therefore, in order to get a closer extraction rate, we have to extend the contact time between coffee powder and water.

Although it takes a long time to extract coffee at low temperature, this process can greatly reduce the acidity (acidity) and bitter taste, making the flavor more sweet and mellow. not only that, the low-acidity coffee extracted at low temperature can not only protect the enamel of teeth, but also less harmful to the stomach.

On the other hand, cold extraction coffee is not sour, but also its shortcomings, how to say, if the bean itself is sour, cold extraction will be difficult to bring out a complete flavor. In addition, everyone has different preferences for the flavor of coffee, some people just like the sour taste, so people who do not like cold coffee, the most common is to ── it does not taste sour enough.

Leaving aside the acidity of the coffee, at the very least, cold coffee, which is naturally sweet and mellow, is better than coffee that is sour and bitter and forces you to drink it with sugar and milk.

In addition, compared with ordinary hot coffee, many people will say that cold coffee has a lower content of coffine, which is difficult to prove. In fact, there is a lot of data pointing out that the caffeine content of cold extract is higher than that of ordinary hot coffee. Yes, it's hard to understand. The amount of caffeine has always been a hot topic. To explore this issue, we first need to know that there are many factors that affect the solubility of caffeine, not just water temperature or time. In theory, cold water can extract fewer coffee oils and compounds, and of course less caffeine, so cold-extracted coffee is classified as a low-caffeinated drink. However, considering that the extraction time is so long, of course, more caffeine should be dissolved. in fact, the difference between extraction time and temperature is very difficult to calculate finely, and if other factors such as grinding scale are taken into account, it is even more difficult, so there is no final conclusion on the amount of caffeine.

Another advantage of cold coffee is that it is very new, representing a new way and feeling of drinking coffee. You can drink as much as you like, with no limit at all, and no one will tell you how to drink it.

Our own mindset and understanding of drinking coffee is also quite subtle. For example, shouldn't coffee be drinkable at any time? But why do we always think of drinking coffee as something we can do in the morning? To put it simply, cold-extracted coffee is completely unrestricted. I personally will not regard cold-extracted coffee as coffee, nor will it be classified as any kind of beverage. It is the most discussed popular drink right now.

In other words, cold-extracted coffee is a different concept from the existing coffee options. What we generally say is black coffee or latte. Cold-extracted coffee is not only coffee, but also can be used as a cold drink or made into other drinks. Maybe you like to drink traditional coffee with milk, but when you drink cold coffee, you will find that it is so mellow and smooth that you don't need to add anything else. You can taste the fragrance of coffee beans in an instant.

Cold coffee is not only delicious and healthy, but also a good drink, full of endless charm and market potential, so powerful, who can say "no" to cold coffee?