The difference between flat grinding and cone grinding of coffee grinder-hand coffee grinder which is good

Coffee grinder the difference between a flat mill and a cone mill-which is better than a hand coffee grinder

Effect of powder structure on coffee flavor. This is just the extraction process. The core of the extraction process is the higher extraction rate at the high water temperature and the higher extraction rate at the fine point of grinding. So what is the effect of powder structure on extraction? It's nothing but a water block! Cone knife powder under the microscope, the main body of the powder structure will have many protruding outer fulcrum, just like a hedgehog. After a lot of powder particles gather, it is impossible to match them completely because of the external fulcrum. The gap will be larger and the flow of water will pass faster. The flow of water passes faster, so the extraction is relatively low. Ghost tooth powder, ghost tooth grinding out of the powder waist slender, relatively smooth, the coupling between powder and powder will be better. The gap is also small, the flow of water through will be relatively slow, and the extraction will be relatively more. From the taste, the same beans, the same amount of powder, the same water temperature, the same fineness of powder, ghost teeth will have better sweetness. Flat knife grinding powder, than conical knife protruding fulcrum is less, particles into blocks, waist than ghost teeth to be stout. Personally, I think the water resistance of flat knife powder should be the greatest! Ghost tooth powder waist is too thin, peace knife powder compared to the resistance must be less. Then the powder ground by the flat knife, from the structural point of view, the convex fulcrum of the powder particles is less, so the coupling is much better than the cone knife powder. The gap is tighter than the cone knife, the water resistance is larger, and the extraction is more.

Coffee grinder refers to the bean grinder with a stable proportion of coarse and fine powder. at present, many famous bean grinder manufacturers have applied a lot of high technology, and its purpose is to pursue the stability of the proportion of coarse and fine powder in coffee powder. On the other hand, some cheap bean grinders are far from stable in the proportion of coarse and fine powder in coffee powder. This time, fine powder accounts for 15%, and next time it may be 30%. It seems that a thick layer of fine powder is covered under the thicker grinding particles. Therefore, the coffee powder ground by such a bean grinder can not be extracted scientifically, because grinding is the premise of extraction.

We often see that many coffee lovers can spend tens of thousands of yuan on an Italian machine, but they will exaggerate to grind beans with a hand mill or a small grinder, which is very unthinkable. The last kilometer of the boutique road of home coffee was completed on the upgrade of the bean grinder.