Coffee grinder how many scales-Italian coffee grinder scale

Coffee grinder how much scale-Italian coffee grinder scale

It is suitable for the degree of grinding of the corresponding extraction method.

The finer the grinding degree is, the stronger the bitter taste is, and the thicker the grinding degree is, the weaker the bitter taste is. This is the basic law of immutability. This is caused by the different amount of hot water covering the surface area of coffee powder, so we can know the relationship between the extraction apparatus and the grinding degree of coffee powder.

Espresso, for example, finely grinds deep-roasted beans and uses a semi-automatic coffee machine to extract a small amount of coffee in a short period of time to get coffee with a strong bitter taste. What if the same coffee powder is extracted by hand? 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, eventually leading to excessive extraction.

It is inevitable that ground coffee will produce heat, but the heat will vary depending on the mechanism of grinding beans. Bean grinders grind coffee beans in two ways: one is to grind coffee beans with two grinding plates engraved with shallow grooves, which we call parallel grinders, and most manual bean grinders fall into this category. The other is represented by the shredder, and the coffee beans are cut by two sets of rollers with sharp blades that bite perpendicular to each other, which is the so-called tapered blade grinder.

It is generally believed that slow grinding with a manual parallel bean grinder will not produce heat, in fact, on the contrary, the type of friction with a disc blade is easy to produce heat. On the other hand, the tapered bean grinder can minimize the friction heat produced by grinding coffee powder. The reason is that the tapered blade is ground quickly with a longer blade process, and the tapered blade takes less time and has a lower heating rate at the same thickness.

The scale is just a reference, different brands have different grinding scales, and the performance of the same model bean grinder of the same brand under the same scale is not exactly the same. it is better to understand it this way: the scale just tells you which direction is thick and which is fine. when you find a suitable powder thickness, the role of the scale will show a little bit. The premise is that only your bean grinder, and can not change the beans, the amount of powder does not change, the strength of the powder can not be changed.

Remember a little trick: when you find the right powder thickness, twist it or pinch it with your hand from time to time, feel it with your body and write it down as much as possible, so that even if you change the bean grinder, you don't have to rely solely on the scale to judge. If you pinch it with your hand, it will be obviously thicker, and it can greatly improve the efficiency.