Do you know the proportion of cold-extracted coffee | teach you how to make cold-extracted coffee

Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style)

Cold extracted coffee, known as Cold Brew Coffee in English, is made of ground coffee beans soaked in cold water for at least 12 hours and filtered by professional utensils. If the alcohol thickness is higher, the time can also be extended to 24-48 hours.

Low temperature and long extraction time are the two main characteristics of cold-extracted coffee and the two main differences between cold-extracted coffee and hot-extracted coffee. Hot-extracted coffee is extracted by hot water, the temperature is between 82-95 ℃, generally no more than 5 minutes. The fastest espresso (Espresso) lasts only 18-23 seconds, while cold-extracted coffee takes much longer than hot-extracted coffee. When it comes to the problem of cold-extracted coffee extraction for a long time, with a more poetic sentence, "what you drink is not only a cup of coffee, but also a long wait."

In terms of flavor, high temperature will make the tannic acid in coffee decompose into pyrowu acid, resulting in a sense of acidity and bitterness. Studies have shown that the acidity in cold-extracted coffee is 67% lower than that in hot-extracted coffee. Therefore, compared with hot extraction coffee and iced coffee with ice after hot extraction, the coffee made by cold extraction process has a lower acidity and is generally welcomed by people.

In addition, due to the conditions of low temperature and long contact with coffee powder, only small molecular flavor substances, such as flower and fruit flavor, are extracted, while those with larger molecules, such as smoky flavor, baking flavor, etc., are difficult to extract. This is why the cold extract coffee does not smell very shocking to the senses, but it tastes smoother, fragrant, hierarchical, obvious and without greasy feeling.

No nonsense, let's introduce the cold soaking method of cold extracted coffee:

The basic material is a bag of hanging ear coffee, or freshly ground coffee powder, with light to moderate baked sun beans (such as sun Yega, sun Sidamo). The reasons will be explained below.

The tools are mixing rods, glass bottles and cups, and the steps are as follows:

1. Put the weighing earbag (coffee powder) in a sealable empty glass bottle. Mix the coffee powder with water and ice at 1:4:8, first with ice, then with coffee powder, and finally with pure water.

two。 Fully stir the above mixture with a stirring rod to make it uniform and seal.

3. Refrigerate for at least 12 hours in a refrigerator of 0-5 ℃ (it is recommended to extend the time for lightly roasted beans).

4. Put the ear filter paper on the cup like hot coffee and pour it into the coffee liquid in the glass bottle to filter. Or filter with hand-washed filter cup filter paper.

5. According to your preference, add sugar, milk or ice cubes, it is recommended to taste the original first, wonderful moment immediately open!

Lazy people's practice

If you are really lazy, you can tear open the earbag with a piece of paper supported by expenses, throw the whole earbag into a bottle filled with ice water, and soak it in the refrigerator, just like a tea bag, as long as you shake the bottle once in a while. let it extract evenly and completely, take it out and drink it directly when the time is enough. This is also the exclusive cool techs of lazy people's cold coffee.

END