What do you think of the coarse dial adjusted by mazzer bean grinder?

What do you think of the coarse dial adjusted by mazzer bean grinder?

Drill a screw hole in the cola bottle and cut a powder outlet to fix it.

Traditional bean grinder

So the instant pulverized bean grinder appeared, especially the electronically controlled bean grinder can accurately control the amount of powder without producing a large amount of residual powder, improve efficiency and clean at the same time, reduce the waste of coffee powder = save money.

Once the Italians disdained the electronically controlled instant flour grinder in Germany and the United States as contrary to tradition, but the facts have proved that: after 2008, the high-end models of most famous factories are electronically controlled instant bean grinders, but this part has certain defects: too much residual powder, cleaning up trouble, the powder under the pulverizer is not accurate and easy to spill the bar dirty.

The change of humidity is also one of the factors affecting the degree of grinding. When the humidity is relatively high, the wet speed of the ground coffee powder is very fast, and there is already a slight humidity when filling the powder and cloth powder. If a fine grinding degree is used, the coffee flavor components have already reacted with the air with high humidity and become messy and impure, while the coffee powder is easier to be compacted and the extraction process is longer, which makes it easier to extract the bad taste and make the overall coffee taste muddy. Therefore, in the case of relatively high humidity, it is not suitable for a finer degree of grinding, it will be better to use a slightly thicker degree of grinding.

On the other hand, in the case of relatively low humidity, coffee powder is ground out after contact with the air, the speed of oxidation reaction will also be accelerated, if the coarse grinding degree is used, then the coffee powder oxidation and flavor composition changes together make the extracted coffee taste will be less, lack of depth and mellow feeling, so the degree of grinding should be adjusted appropriately. Of course, after adjusting the degree of grinding, the corresponding adjustment of powder strength is also necessary.