The summary of coffee grinding selects the grinding degree suitable for coffee utensils.

In the article "Four Points of Coffee Bean Grinding", we said four points to pay attention to in the coffee grinding process. In the previous article, we have shared three.

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

2. Choice of coffee grinder: Don't let the heat take away the coffee fragrance

3, coffee grinding trick: do not produce coffee fine powder skills

The fourth of the four points of coffee bean grinding will be shared below: Choose the grinding degree suitable for coffee utensils.

Here I would like to remind you that "the finer the bitterness, the stronger the bitterness, the coarser the bitterness of the ground beans", this is the basic rule that remains unchanged in the coffee extraction process, which is caused by the different size of the coffee powder surface area covered by hot water.

Espress coffee, for example, grinds deeply roasted beans finely and extracts a small amount of coffee liquid in a short time using an espresso machine to get coffee with a fairly strong bitterness. What about the same coffee powder extracted by drip filtration? As you can see by doing it, the filter paper will be clogged with coffee powder, making it difficult for the injected hot water to pass through, the extraction time will be prolonged, and finally it will become excessive extraction.

So, is ultra-coarse ground coffee better?

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

Each coffee maker has its own grind, so grinding is not what we want to grind with what grind. As mentioned above, the method of making coffee by drip filter is not suitable for coffee powder too coarse or too fine, that is to say, the most suitable grinding degree is medium to medium coarse.

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 moderate grinding: filter paper drip method, flannel drip method, plug pot (also known as siphon pot).

3, suitable for coarse grinding: drip coffee machine, drip pot.

TIPS: By the way, a Turkish copper pot shaped like a ladle is filled with coffee powder, water and sugar and boiled over a fire. This method of extracting coffee, known as the "poaching method," uses a finely ground coffee powder that is deeply roasted. Why use dark roasted coffee powder? Light and medium roast coffee powder will increase its astringency after boiling at high temperature, while the use of deep roast coffee, even if extracted at high temperature, will result in a completely bitter coffee.

Why do espresso machines make coffee with dark roast beans?

Espresso vs. Turkish Coffee There is another reason to use dark roast coffee. Because deep roasting will make coffee beans soft and easy to grind a little bit finer. It's a bit superfluous, but some Italian-made grinders can't grind light roasted hard coffee beans. The grinder was originally designed for dark roast coffee beans, and grinding hard, light roast coffee beans would immediately malfunction. It seems that the performance of the bean grinder also represents the personality of the country.

Coffee grinding, here to share the end, I hope it will be helpful to coffee friends. In future articles, more is to share some tips and coffee knowledge in coffee making with friends.