The influence of grinding bean coarseness on coffee machine output, how to choose the right grinding bean coarseness

Abstract: The coarseness of the grind has an important impact on the quality of the coffee machine. Too fine a grind will cause poor water flow, affect extraction, and produce bitterness; while too coarse a grind will result in insufficient extraction and a weak taste. Choosing the right grind size requires comprehensive consideration based on the type of coffee machine, personal taste, and type of coffee beans. Correctly adjusting the grind size can ensure the richness and taste of the coffee and improve the quality of the coffee.

In the world of coffee culture, the choice of grinding bean coarseness may seem like a trivial detail, but it directly affects the taste and quality of coffee. For coffee machines, the choice of grinding bean coarseness is even more crucial. But how should we choose the right grinding bean coarseness? What scientific principles and cultural heritage are hidden behind this? Let's explore it together!

We must understand that the grinding process of coffee beans is actually a complex physical and chemical change process. The coarseness of the ground beans directly affects the release rate and proportion of moisture, oil, aroma and other components in the coffee beans during the extraction process. Different types of coffee machines, different types of coffee beans and different brewing methods all require us to adjust the coarseness of the ground beans to achieve the best extraction effect.

For home coffee machines, common types include drip coffee machines, espresso machines, French press coffee machines, etc. Each coffee machine has different requirements for the coarseness of the ground beans. Drip coffee machines require a coarser grind because water will drip naturally during the extraction process. A coarser grind can ensure uniform extraction of coffee and avoid over-extraction or under-extraction. Espresso machines require a finer grind because the hot water under high pressure needs to be in more complete contact with the coffee powder to extract more aroma and oil.

The type of coffee beans will also affect the choice of grinding coarseness. Different types of coffee beans have different densities, moisture content, and oil content. These characteristics determine that we need to adjust the coarseness when grinding the beans. Coffee beans with higher density require finer grinding so that hot water can fully penetrate the coffee beans and extract more flavor.

The influence of the brewing method cannot be ignored. Different brewing methods, such as hand brewing, French press, etc., require us to adjust the coarseness of the ground beans according to the specific brewing skills and time. When hand brewing coffee, if you want the extraction speed to be slightly faster, you can choose a slightly coarser grinding degree; if you want the extraction speed to be slower and fully extract the aroma and taste of the coffee, you can choose a slightly finer grinding degree.

How to choose the right grinding size? This requires us to practice and try. At the beginning, we can try according to general guidelines, and then adjust according to the taste and quality of the coffee. We can also refer to the advice of professional baristas or improve our coffee skills by taking coffee courses.

In actual operation, we can also adjust the coarseness of the ground beans by observing the coffee extraction process. If the coffee is extracted too quickly, you can consider slightly finer grinding; if it is extracted too slowly, you can consider slightly coarser grinding. We can also adjust according to personal taste preferences until we find the coarseness of the ground beans that suits us best.

The choice of grinding bean coarseness is a link that requires comprehensive consideration of many factors. Only by continuous trial and adjustment can we find the grinding bean coarseness that suits us best and enjoy the most wonderful coffee experience. In this process, we will also have a deeper understanding of the culture and charm of coffee.