Coffee grinding summary: choose the grinding degree suitable for coffee utensils

1. Coffee grinding should be average: make coffee more delicious.

2. the choice of coffee grinder: don't let the heat take away the aroma of coffee.

3. The trick of coffee grinding: the skill of not producing fine coffee powder

The following will share the fourth of the four main points of coffee bean grinding: choose the degree of grinding that is suitable for coffee utensils.

Here, I would like to remind you that "the finer the grinding degree is, the stronger the bitterness is, and the thicker the ground bean is, the weaker the bitter taste is." this is the basic law of coffee extraction, which is caused by the difference in the surface area of coffee powder covered by hot water. from this we can know the relationship between coffee utensils and the grinding degree of coffee powder.

For example, Espress coffee, which grinds deeply roasted beans and uses an espresso machine to extract a small amount of coffee liquid in a short period of time, will get coffee with a strong bitter taste. What happens when the same coffee powder is extracted by drip filtration? If you do it, you can see that the filter paper will be blocked by coffee powder, making it difficult for the injected hot water to pass through, and the extraction time will be lengthened, which will eventually lead to excessive extraction.

So, will the coffee powder with ultra-coarse grind be better?

The above problem is also a matter of degree. If the grinding is too rough, the hot water will easily pass through the filter paper, and the delicious ingredients of coffee can not be fully extracted. In this way, the coffee from the coffee pot becomes a light, thin liquid.

Each coffee utensil has its own suitable degree of grinding, so we don't use whatever degree of grinding we want. As mentioned above, the coffee powder is too coarse or too fine to make coffee, that is to say, the most suitable grinding degree is medium to medium roughness.

The following is the relationship between the grinding degree of coffee powder and the extraction method:

1. Suitable for fineness grinding: Turkish copper pot, mocha pot, espresso machine.

2. Suitable for medium grinding: filter paper dripping filter, flannel dripping, plug air kettle (also known as siphon kettle).

3. Suitable for roughness grinding: dripping coffee machine, dripping filter pot.

TIPS: by the way, the Turkish copper pot, shaped like a spoon, is filled with coffee powder, water and sugar and boiled over the fire. This method of extracting coffee, known as "boiling", uses a deeply roasted, finely powdered coffee powder. Why use deep-baked coffee powder? The astringent taste of light-roasted and moderately roasted coffee powder will be enhanced after boiling at high temperature, while using deep-roasted coffee, even if extracted at high temperature, the coffee is completely bitter.

Why do espresso machines use deep-roasted beans to make coffee?

There is another reason why espresso and Turkish coffee use deep-roasted coffee. Because deep roasting will make coffee beans soft and easy to grind a little finer. Although this is a bit superfluous, some Italian-made bean grinders cannot crush lightly roasted hard coffee beans. The grinder is originally designed for deep-roasted coffee beans, which can break down immediately when used to grind light-roasted coffee beans with hard texture. It seems that the performance of the bean grinder also represents the personality of the country.