How to brew a delicious cup of hanging-ear coffee? How many times can I flush?

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Author: deciduous leaves (from Douban)

Source: https://www.douban.com/note/619243153/

Drinking coffee is an easy thing, especially in the bitter environment of the office, if you can easily make a delicious cup of coffee, it will be physically and mentally pleasant.

When some people hang up their ears, they will wonder why the flavor is described as soft, sour and sweet, but it is so hard to swallow what they soak out.

The factors that determine whether a cup of coffee tastes good or not are not only the flavor and roasting degree of the coffee bean itself, but also the grinding degree (thickness), water temperature and water quantity of the coffee powder in the process of grinding and brewing.

Of course, as a cup of hanging-ear coffee, the thickness of the coffee powder has been fixed, and what we can adjust is the water temperature and water volume.

The picture comes from the camera network.

▷ water temperature

The principle of coffee extraction is to dissolve. You must know that many powders or particles in life dissolve much faster in hot water than in cold water, and coffee is no exception.

The higher the temperature of the water, the more the aroma and flavor of the coffee dissolve out, the stronger the taste and the more bitter it is. On the other hand, when the temperature of the water is low, the aroma and taste of the coffee are weak, and the bitterness of the coffee is weak.

The most suitable temperature for coffee extraction is 90-92 ℃. If the temperature is higher than this, some of the ingredients (such as caffeine) in coffee will change due to the high temperature, making it bitter and scorched. Of course, it doesn't mean that we have to use this temperature when we extract coffee liquid.

The ▪ extraction time is long, the water temperature is favorable to the low point, and the extraction time is short, the water temperature is relatively high. Because the higher the temperature of the water, the easier it is to dissolve more substances, and bad smells such as miscellaneous smells are more likely to be brought out.

The fresher the ▪ coffee powder is, the more suitable it is to use a relatively low water temperature, 80-85 ℃; the coffee powder has been kept for a long time because the coffee oil fills the porous cell structure, so it is not easy to extract fully, so it is suitable to choose a water temperature above 85 °.

My personal experience is to get an earbag or a kind of coffee bean, at least know its flavor trend, that is, it is mellow, chocolate, caramel nut and other medium-depth roasted coffee, or sour, tropical fruit and other light-roasted, moderately roasted coffee beans. The former can be brewed at a higher water temperature, while the latter is suggested to start with a lower water temperature.

The picture comes from the camera network.

▷ water quantity

It is not so much the amount of water as the concentration of coffee extract.

If you make a cup of hanging-ear coffee, if you take the steaming step, the steamed cup may be more full-bodied than the unsteamed one with the same amount of water.

In the early stage, about 20% of the extraction solution dissolved about 80% of the total coffee. In other words, the early extract will dissolve the coffee to the maximum extent, which determines the taste and aroma of the coffee. In the later stage, more lignin components of coffee beans were dissolved in the extract, which determined the thickness and bitterness of alcohol.

It is not easy to steam for too long, but it is easy to "over-extract" for too long, bringing out the bad miscellaneous taste and bitter taste.

My personal experience is that if you look at the dry state of the coffee powder layer, if the layer is about to dry and crack, start formal water injection.

Of course, some friends say that it is too troublesome to drink stuffy steam, or it is not good for steaming. Instead of steaming, you can fill the earbag with water and stir the coffee powder with a clean small coffee spoon or stirring stick, so that the coffee powder tends to be extracted more evenly. However, don't forget to reduce the soaking time of the earbag in the liquid when using this method.

You see, drinking coffee is sometimes like a small chemical experiment, with occasional unexpected joys and disappointments. You might as well make a cup of coffee with anticipation every time, just as you should always look forward to life.

The above is only a personal humble opinion, if you have a better point of view and experience, you are welcome to leave a comment. I will be inadvertently happy!

End

Originally contained in: Luo Peanut slow Life Studio