Cold Cui / Cold extract Coffee is better with single beans or mixed beans? What kind of coffee beans are suitable for cold extraction?

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Editor, is it better to use single beans or mixed beans for cold coffee? What kind of coffee beans are suitable for cold extraction?

At this time of year, many friends ask Qianjie Coffee about what coffee beans are suitable for cold extraction (soaking or ice droplets). When non-cup quality control, Qianjie coffee editor is very casual to drink coffee, what kind of coffee can be swallowed, according to a cup, not willing to distinguish between coffee varieties, origin, roasting, grinding, extraction methods, it is not very serious to consider what kind of coffee beans are suitable for cold extraction.

However, Wechat fans mind the fact that all coffee is suitable for cold extraction in Qianjie Coffee, and they still ask Qianjie Coffee to select a few coffees from existing varieties as the best representatives of cold extractive character.

With regard to cold-extracted coffee, the most common question for front street coffee is: what's the difference between "cold-extracted coffee" and "coffee with ice"? On the surface, the difference between the two is: cold extraction is cold water extraction, ice coffee is extracted at high temperature and then added ice cubes.

So what difference will the difference in water temperature bring to the flavor of coffee? The physics teacher once said:

The main results are as follows: (1) different water temperature leads to different melting points of various substances. The essence of coffee extraction is to dissolve the substance in the coffee powder into the water, which turns the water into coffee liquid. Generally speaking, the solubility of solid solutes increases with the increase of water temperature, but the solubility of most gases is the opposite.

(2) the higher the temperature, the faster the molecular diffusion. So it takes minutes to extract coffee at high temperature, but cold coffee will make you wait a long time. High temperature extraction is fast, which means that some substances have not yet been extracted, but it is over. In contrast, cold extraction will slowly release all the aroma substances in the coffee powder more patiently.

Looking at Qianjie Coffee, we can see that cold-extracted coffee and high-temperature extracted coffee contain different coffee ingredients. So what substances are missing? Interested friends can have a look at Baidu, but personally, I think the information on the Internet is only for viewing, and it is very likely to be scribbled, because it is very difficult to strictly distinguish all materials, and who will really do so? It is enough for everyone to focus on the differences in the taste of coffee.

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Suitable for cold coffee beans?

At present, there is no particularly authoritative statement about what coffee beans are most suitable for cold extraction. The suggestion for Qianjie Coffee is:

(1) No matter where the beans are from, be sure to use coffee beans that are roasted as freshly as possible. Because freshly baked beans contain a lot of fragrant gases, and the gases are more soluble in cold water. Therefore, coffee made from freshly roasted coffee beans will be more fragrant than extracted at high temperature.

(2) Deep-roasted coffee beans are not recommended. In terms of smell, the fruit aroma of deep baked beans has basically disappeared. Taste, deep baked beans bitter taste, back sweet less. Deep-baked beans are more suitable for Italian concentration.

Summary:

It doesn't matter whether cold extracted coffee is made of single bean or mixed beans. in the final analysis, cold extracted coffee is just a method of making coffee, and it has very low requirements for coffee beans, as long as you think it tastes good, whether it's single or mixed, in other words, as long as it doesn't taste good, what's the use of mixing it? As for the question of what kind of coffee beans are suitable for cold extraction, Qianjie Coffee has recommended light-roasted sun or honey beans many times before, because these beans have a slight fermented smell, red wine aroma or fruit fermented aroma, which is particularly charming, but later tried the deep-baked Blue Mountains and Mantenin to do cold extraction, and suddenly fell in love with the mellow taste of deep-roasted coffee beans after cold extraction. Taste as thick and sweet as honey, anyway! Try them all! You have nothing to lose!

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