How to adjust the thickness and thickness scale of the bean grinder is the most appropriate

How to adjust the thickness of the bean grinder?

Adjustment of electric bean grinder

The adjustment of the electric grinder is mainly aimed at two variables, the powder output and the grinding degree. These two variables are mutually dependent, and changing one of them changes the other.

Ordinary electric bean grinder will adjust the grinding and grinding time of the bean grinder according to the preset powder output (note that the grinding machine adjusts the powder output according to time rather than weight). If you are not satisfied with the quality of your coffee, the first thing you need to do is determine whether the problem is with the amount of powder or the degree of grinding.

In general, the distance between the cake and the water outlet after correct weight, smoothing and pressing should be 5-6 mm. If the cake height is not within this range, you should try to adjust the amount of flour (that is, grinding and flour time) of the grinder. When adjusting the amount of powder, the amplitude of each adjustment should be between 0.2 and 0.3 seconds. After each adjustment, you need to re-test the quality of coffee.

The extraction rate of coffee with deeper roasting degree is higher, and it should be suppressed by coarse grinding. On the other hand, lighter roast coffee has a lower extraction rate and should be ground slightly, but unless you are an acidophile, such as serving lighter roast Geisha with scale #2.5.

Panama or Kenya, it is easy to extract more solute, acid to pout, it is recommended to adjust the coarse point to #3.5, can inhibit the dissolution of acid. The thickness of the pinch, in addition to looking at the roasting degree, more important is to understand their preferences in the origin of the bean, it is difficult to have a universal grinding degree but some heavy taste veterans, like to #2.5 to hand coffee light roast, medium roast and medium deep roast coffee, because the viscosity and smoothness is better than #3, the aftertaste is very far, but relatively, the risk of biting throat feeling is also increased. Deep baked beans entering the intensive stage of double explosion should not be hand-washed with #2.5. The failure rate is very high. It is safest to hand-wash with scale #3. It is suitable for light baking, medium baking and medium deep baking. However, if deep-baked beans are hand-washed with #3, they may be too bitter. Refine half a degree to #2.5, the extraction rate will be 0.5%~1.5% higher than #3, the amplitude is very large, the error tolerance space becomes small, the water temperature is too high or the extraction time is too long, and it is easy to rush out the bad coffee with a slight flash. The smaller the scale of the bean grinder, the finer the grinding, the thicker the coffee. For the most commonly used small eagle bean grinder, the scale #3.5~#3 has moderate concentration, which is most suitable for hand brewing. If you adjust it to scale #4, it can also be used to hand brew heavy roasted beans or light medium roasted coffee beans. However, the extraction rate is too low, so be prepared for insufficient extraction and too thin taste.