What is the scientific principle behind coffee grinding? How much effect does grinding have on a cup of coffee?

What's the difference between an ordinary cup of coffee and a perfect cup of coffee? Everything from the freshness of coffee beans to the way you cook them is one of the reasons. One of the most overlooked factors is the consistency of grinding, which seems trivial because the extraction begins with the direct addition of water.

Contrary to what you think, if you have compared it carefully, you will be shocked by what you have found. The correct grinding level can directly affect the flavor and texture of coffee. The more stable the grinding of your coffee, the easier it is to make a perfect cup of coffee.

The relationship between extraction and flavor equilibrium

If the coffee powder you use is too coarse, the flavor of the coffee can not be fully extracted during the extraction process, which can easily lead to over-sour coffee, which is often called "insufficient extraction". On the contrary, if you grind it too fine, it is easy to over-extract, and the flavor is also uneven.

Neither excessive extraction nor insufficient extraction is a good thing, which directly affects the quality of coffee products. Before you start trying to be a family barista, it's best to be familiar with coffee grinding. Taking advantage of this can help you improve your ideal cup of coffee.

What does the degree of grinding include?

Very fine grinding-suitable for brewing commercial espresso machines and Ibrik Turkish coffee.

Fine grinding-one of the most common grinding degrees, suitable for Italian coffee machines, etc.

Medium and fine grinding-suitable for drip type hand coffee, D special pressure and so on.

Medium grinding-also suitable for Aeropress and tipping coffee machines.

Medium and rough grinding-suitable for paper filters such as Chemex and Smart Cup.

Rough grinding-suitable for drip coffee, Chemex and siphon coffee.

Super thick-suitable for French pressure pot brewing, cold brewing coffee.

It is worth noting that no degree of grinding can be applied to all types of coffee extraction, and it is better to use the corresponding degree of grinding in a specific extraction method.

What do you use to grind coffee beans?

After you have acquired the knowledge of the degree of grinding that suits your cooking method, the next step is to bring your attention to how to grind. It is important to know the best type of bean grinder and how to maintain it properly.

In the field of home coffee grinder, the most common and mainstream is the blade coffee grinder. Unfortunately, the effect of the blade grinder is not ideal, there are a lot of irregular coffee powder, and there is a scorched taste (caused by the heat of the rapidly rotating leaves), the degree of grinding of the coffee will lead to inconsistent taste of the extraction.

You may also want to realize that the adjustment of your grinding settings depends on the type of coffee beans you grind, and not all beans are the same. You need to try, or follow the advice of the baker, choose the best way to grind the beans, according to the origin of the beans, in order to achieve the right extraction and complete flavor presentation.